<?xml version="1.0" encoding="UTF-8"?>
<!--XBRL Document Modified with Ez-Editor Version 1.8.0.3 on Thursday, September 26, 2019 05:45:28 PM -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
<arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
<arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
<arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
<arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
<arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
<arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ConsolidatedStatementsOfChangesInEquity" roleURI="http://www.metallaroyalty.com/role/ConsolidatedStatementsOfChangesInEquity"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#RoyaltyStreamAndOtherInterestsNarrativeDetails" roleURI="http://www.metallaroyalty.com/role/RoyaltyStreamAndOtherInterestsNarrativeDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#InvestmentInSilverbackNarrativeDetails" roleURI="http://www.metallaroyalty.com/role/InvestmentInSilverbackNarrativeDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#LoansPayableNarrativeDetails" roleURI="http://www.metallaroyalty.com/role/LoansPayableNarrativeDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#RELATEDPARTYTRANSACTIONSANDBALANCESDetails1" roleURI="http://www.metallaroyalty.com/role/RELATEDPARTYTRANSACTIONSANDBALANCESDetails1"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#SupplementalDisclosureWithRespectToCashFlowsNarrativeDetails" roleURI="http://www.metallaroyalty.com/role/SupplementalDisclosureWithRespectToCashFlowsNarrativeDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#FinancialInstrumentsNarrativeDetails" roleURI="http://www.metallaroyalty.com/role/FinancialInstrumentsNarrativeDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#EventsAfterReportingDateNarrativeDetails" roleURI="http://www.metallaroyalty.com/role/EventsAfterReportingDateNarrativeDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfTransactionsRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombinationDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfTransactionsRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombinationDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfSubsidiaryDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfSubsidiaryDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfDetailedInformationAboutLoansPayableDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutLoansPayableDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfDeferredIncomeTaxAssetLiabilityDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfDeferredIncomeTaxAssetLiabilityDetails"/>
<roleRef xlink:type="simple" roleURI="http://www.metallaroyalty.com/role/ScheduleOfRangeOfExercisePricesOfOutstandingShareOptionsDetails" xlink:href="mtaff-20190531.xsd#ScheduleOfRangeOfExercisePricesOfOutstandingShareOptionsDetails"/>
<roleRef xlink:type="simple" roleURI="http://www.metallaroyalty.com/role/ScheduleOfRangeOfExercisePricesOfOutstandingWarrantsDetails" xlink:href="mtaff-20190531.xsd#ScheduleOfRangeOfExercisePricesOfOutstandingWarrantsDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfTransactionsBetweenRelatedPartiesDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfTransactionsBetweenRelatedPartiesDetails"/>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfDetailedInformationAboutFinancialInstrumentsMeasuredAtFairValueDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutFinancialInstrumentsMeasuredAtFairValueDetails"/>

<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ConsolidatedStatementsOfChangesInEquity">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_StatementOfChangesInEquityLineItems" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_StatementOfChangesInEquityTable_1" order="10" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable_1" xlink:to="loc_ifrs-full_ComponentsOfEquityAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EquityMember" xlink:label="loc_ifrs-full_EquityMember_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_2" xlink:to="loc_ifrs-full_EquityMember_6" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EquityMember" xlink:label="loc_ifrs-full_EquityMember_6_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_2" xlink:to="loc_ifrs-full_EquityMember_6_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_RetainedEarningsMember" xlink:label="loc_ifrs-full_RetainedEarningsMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_6" xlink:to="loc_ifrs-full_RetainedEarningsMember_5" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_OtherReservesMember" xlink:label="loc_ifrs-full_OtherReservesMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_6" xlink:to="loc_ifrs-full_OtherReservesMember_4" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IssuedCapitalMember" xlink:label="loc_ifrs-full_IssuedCapitalMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_6" xlink:to="loc_ifrs-full_IssuedCapitalMember_3" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_Equity" xlink:label="loc_ifrs-full_Equity_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_Equity_7" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NumberOfSharesOutstanding" xlink:label="loc_ifrs-full_NumberOfSharesOutstanding_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfSharesOutstanding_8" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuances" xlink:label="loc_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuances_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuances_9" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuancesShares" xlink:label="loc_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuancesShares_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuancesShares_10" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ShareIssueRelatedCost" xlink:label="loc_ifrs-full_ShareIssueRelatedCost_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_ShareIssueRelatedCost_11" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FindersWarrantsShareIssueRelatedCosts" xlink:label="loc_mtaff_FindersWarrantsShareIssueRelatedCosts_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_FindersWarrantsShareIssueRelatedCosts_12" order="90" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests" xlink:label="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests_13" order="100" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterestsInShares" xlink:label="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterestsInShares_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterestsInShares_14" order="110" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_15"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_15" order="120" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable" xlink:label="loc_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable_16"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable_16" order="130" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IncreaseDecreaseThroughExerciseOfOptions" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughExerciseOfOptions_17"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughExerciseOfOptions_17" order="140" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughExerciseOfOptionsShares" xlink:label="loc_mtaff_IncreaseDecreaseThroughExerciseOfOptionsShares_18"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughExerciseOfOptionsShares_18" order="150" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_19"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_19" order="160" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughExerciseOfWarrantsEquityInShares" xlink:label="loc_mtaff_IncreaseDecreaseThroughExerciseOfWarrantsEquityInShares_20"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughExerciseOfWarrantsEquityInShares_20" order="170" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_21"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_21" order="180" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers" xlink:label="loc_mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers_22"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers_22" order="190" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RestrictedStockUnitIssuedToDirectorsAndOfficers" xlink:label="loc_mtaff_RestrictedStockUnitIssuedToDirectorsAndOfficers_23"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_RestrictedStockUnitIssuedToDirectorsAndOfficers_23" order="200" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants" xlink:label="loc_mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants_24"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants_24" order="210" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_25"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_25" order="220" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FindersShareIssueRelatedCosts" xlink:label="loc_mtaff_FindersShareIssueRelatedCosts_26"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_FindersShareIssueRelatedCosts_26" order="230" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyInterests" xlink:label="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyInterests_28"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyInterests_28" order="40" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseInDeferredAcquisitionCosts" xlink:label="loc_mtaff_IncreaseDecreaseInDeferredAcquisitionCosts_30"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseInDeferredAcquisitionCosts_30" order="250" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfCommonSharesWarrantsIssuedAsDeferredAcquisitionCosts" xlink:label="loc_mtaff_NumberOfCommonSharesWarrantsIssuedAsDeferredAcquisitionCosts_31"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_NumberOfCommonSharesWarrantsIssuedAsDeferredAcquisitionCosts_31" order="260" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions" xlink:label="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_32"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_32" order="270" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare" xlink:label="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_33"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_33" order="280" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DividendsRecognisedAsDistributionsToOwnersOfParent" xlink:label="loc_ifrs-full_DividendsRecognisedAsDistributionsToOwnersOfParent_34"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_DividendsRecognisedAsDistributionsToOwnersOfParent_34" order="290" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ProfitLoss" xlink:label="loc_ifrs-full_ProfitLoss_35"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_ifrs-full_ProfitLoss_35" order="300" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests" xlink:label="loc_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_0" xlink:to="loc_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests" order="50" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/RoyaltyStreamAndOtherInterestsNarrativeDetails">
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_2" order="0" use="optional"/>




























<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_16"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_16" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_16" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_16" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AgnicoEagleMinesLimitedMember" xlink:label="loc_mtaff_AgnicoEagleMinesLimitedMember_18"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17" xlink:to="loc_mtaff_AgnicoEagleMinesLimitedMember_18" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MiradoMineProjectMember" xlink:label="loc_mtaff_MiradoMineProjectMember_19"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17" xlink:to="loc_mtaff_MiradoMineProjectMember_19" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MineraTritonArgentinaMember" xlink:label="loc_mtaff_MineraTritonArgentinaMember_20"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17" xlink:to="loc_mtaff_MineraTritonArgentinaMember_20" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_GarrisonProjectNsrMember" xlink:label="loc_mtaff_GarrisonProjectNsrMember_21"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17" xlink:to="loc_mtaff_GarrisonProjectNsrMember_21" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LosPlatosProjectNsrMember" xlink:label="loc_mtaff_LosPlatosProjectNsrMember_22"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17" xlink:to="loc_mtaff_LosPlatosProjectNsrMember_22" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TowerMountainProjectMember" xlink:label="loc_mtaff_TowerMountainProjectMember_23"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_17" xlink:to="loc_mtaff_TowerMountainProjectMember_23" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TypesOfInvestmentPropertyAxis" xlink:label="loc_ifrs-full_TypesOfInvestmentPropertyAxis_24"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xlink:to="loc_ifrs-full_TypesOfInvestmentPropertyAxis_24" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_InvestmentPropertyMember" xlink:label="loc_ifrs-full_InvestmentPropertyMember_25"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfInvestmentPropertyAxis_24" xlink:to="loc_ifrs-full_InvestmentPropertyMember_25" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_InvestmentPropertyMember" xlink:label="loc_ifrs-full_InvestmentPropertyMember_25_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfInvestmentPropertyAxis_24" xlink:to="loc_ifrs-full_InvestmentPropertyMember_25_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_JoaquinProjectMember" xlink:label="loc_mtaff_JoaquinProjectMember_26"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_JoaquinProjectMember_26" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ZarumaGoldMineMember" xlink:label="loc_mtaff_ZarumaGoldMineMember_27"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_ZarumaGoldMineMember_27" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PuchuldizaProjectMember" xlink:label="loc_mtaff_PuchuldizaProjectMember_28"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_PuchuldizaProjectMember_28" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_HolyePondExtensionPropertyMember" xlink:label="loc_mtaff_HolyePondExtensionPropertyMember_29"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_HolyePondExtensionPropertyMember_29" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MontclergPropertyMember" xlink:label="loc_mtaff_MontclergPropertyMember_30"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_MontclergPropertyMember_30" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_WestTimminsExtensionPropertiesMember" xlink:label="loc_mtaff_WestTimminsExtensionPropertiesMember_31"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_WestTimminsExtensionPropertiesMember_31" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DesantisPropertiesMember" xlink:label="loc_mtaff_DesantisPropertiesMember_32"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_DesantisPropertiesMember_32" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_EitherHoylePondMineOrWestTimminsMineMember" xlink:label="loc_mtaff_EitherHoylePondMineOrWestTimminsMineMember_33"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_InvestmentPropertyMember_25" xlink:to="loc_mtaff_EitherHoylePondMineOrWestTimminsMineMember_33" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis" xlink:label="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_34"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xlink:to="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_34" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain" xlink:label="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_35"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_34" xlink:to="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_35" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain" xlink:label="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_35_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_34" xlink:to="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_35_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_WasamacNsrMember" xlink:label="loc_mtaff_WasamacNsrMember_36"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_35" xlink:to="loc_mtaff_WasamacNsrMember_36" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ElRealitoNsrMember" xlink:label="loc_mtaff_ElRealitoNsrMember_37"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_35" xlink:to="loc_mtaff_ElRealitoNsrMember_37" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LaFortunaNsrOptionMember" xlink:label="loc_mtaff_LaFortunaNsrOptionMember_38"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_35" xlink:to="loc_mtaff_LaFortunaNsrOptionMember_38" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NetSmelterReturnAcquiredPercentage" xlink:label="loc_mtaff_NetSmelterReturnAcquiredPercentage_39"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NetSmelterReturnAcquiredPercentage_39" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests" xlink:label="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests_40"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests_40" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests" xlink:label="loc_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_41"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_41" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfCommonSharesReceivedForExchangeRatio" xlink:label="loc_mtaff_NumberOfCommonSharesReceivedForExchangeRatio_42"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NumberOfCommonSharesReceivedForExchangeRatio_42" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CashFlowsUsedForAcquisitionsOfRoyaltyAndStreamInterests" xlink:label="loc_mtaff_CashFlowsUsedForAcquisitionsOfRoyaltyAndStreamInterests_43"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_CashFlowsUsedForAcquisitionsOfRoyaltyAndStreamInterests_43" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PurchasePriceOfAcquisitionPaidInCash" xlink:label="loc_mtaff_PurchasePriceOfAcquisitionPaidInCash_44"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_PurchasePriceOfAcquisitionPaidInCash_44" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExemptionOnGoldProduced" xlink:label="loc_mtaff_ExemptionOnGoldProduced_45"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_ExemptionOnGoldProduced_45" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_BuyBackRightPercentage" xlink:label="loc_mtaff_BuyBackRightPercentage_46"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_BuyBackRightPercentage_46" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RightToBuyBackStreamAmount" xlink:label="loc_mtaff_RightToBuyBackStreamAmount_47"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RightToBuyBackStreamAmount_47" order="90" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfRoyaltyInterest" xlink:label="loc_mtaff_NumberOfRoyaltyInterest_48"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NumberOfRoyaltyInterest_48" order="100" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfSilverStreamInterests" xlink:label="loc_mtaff_NumberOfSilverStreamInterests_49"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NumberOfSilverStreamInterests_49" order="110" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SharePricePerShare" xlink:label="loc_mtaff_SharePricePerShare_50"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_SharePricePerShare_50" order="120" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConvertibleDebenturePayable" xlink:label="loc_mtaff_ConvertibleDebenturePayable_51"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_ConvertibleDebenturePayable_51" order="130" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NetSmelterReturn" xlink:label="loc_mtaff_NetSmelterReturn_52"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NetSmelterReturn_52" order="140" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts" xlink:label="loc_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_53"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_53" order="150" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OperatingCostContributionPricePerOunce" xlink:label="loc_mtaff_OperatingCostContributionPricePerOunce_54"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_OperatingCostContributionPricePerOunce_54" order="160" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PercentageIncrementsOfExceededSilverPricePerOunce" xlink:label="loc_mtaff_PercentageIncrementsOfExceededSilverPricePerOunce_55"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_PercentageIncrementsOfExceededSilverPricePerOunce_55" order="170" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PercentageRightToBuySilverProduction" xlink:label="loc_mtaff_PercentageRightToBuySilverProduction_56"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_PercentageRightToBuySilverProduction_56" order="180" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExceedingSilverPricePerOunce" xlink:label="loc_mtaff_ExceedingSilverPricePerOunce_57"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_ExceedingSilverPricePerOunce_57" order="190" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RightToBuySilverProduction" xlink:label="loc_mtaff_RightToBuySilverProduction_58"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RightToBuySilverProduction_58" order="200" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RightToDeliverSilverProductionOuncesDelivered" xlink:label="loc_mtaff_RightToDeliverSilverProductionOuncesDelivered_59"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RightToDeliverSilverProductionOuncesDelivered_59" order="210" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RightToDeliverSilverProductionOuncesRemainingToBeDelivered" xlink:label="loc_mtaff_RightToDeliverSilverProductionOuncesRemainingToBeDelivered_60"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RightToDeliverSilverProductionOuncesRemainingToBeDelivered_60" order="220" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_EstimatedDeliveryOfPayableSilver" xlink:label="loc_mtaff_EstimatedDeliveryOfPayableSilver_61"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_EstimatedDeliveryOfPayableSilver_61" order="230" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RecoveriesFromRoyaltyAndStreamInterests" xlink:label="loc_mtaff_RecoveriesFromRoyaltyAndStreamInterests_62"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RecoveriesFromRoyaltyAndStreamInterests_62" order="240" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AdditionalNetSmelterReturnPercentage" xlink:label="loc_mtaff_AdditionalNetSmelterReturnPercentage_63"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_AdditionalNetSmelterReturnPercentage_63" order="250" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_WeightedAverageExercisePriceOfWarrantsIssued" xlink:label="loc_mtaff_WeightedAverageExercisePriceOfWarrantsIssued_64"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_WeightedAverageExercisePriceOfWarrantsIssued_64" order="260" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SharePurchaseWarrantExercisePriceTerm" xlink:label="loc_mtaff_SharePurchaseWarrantExercisePriceTerm_65"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_SharePurchaseWarrantExercisePriceTerm_65" order="270" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AcquisitionCostsForRoyaltyInterests" xlink:label="loc_mtaff_AcquisitionCostsForRoyaltyInterests_66"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_AcquisitionCostsForRoyaltyInterests_66" order="280" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PurchasePriceForAdditionalNetSmelterRoyalty" xlink:label="loc_mtaff_PurchasePriceForAdditionalNetSmelterRoyalty_67"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_PurchasePriceForAdditionalNetSmelterRoyalty_67" order="290" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfNsrInterestsAcquired" xlink:label="loc_mtaff_NumberOfNsrInterestsAcquired_68"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NumberOfNsrInterestsAcquired_68" order="300" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SharePurchaseWarrantsIssued" xlink:label="loc_mtaff_SharePurchaseWarrantsIssued_69"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_SharePurchaseWarrantsIssued_69" order="310" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValueOfSharePurchaseWarrantsIssued" xlink:label="loc_mtaff_ValueOfSharePurchaseWarrantsIssued_70"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_ValueOfSharePurchaseWarrantsIssued_70" order="320" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NetSmelterReturnAcquisitionRange" xlink:label="loc_mtaff_NetSmelterReturnAcquisitionRange_71"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NetSmelterReturnAcquisitionRange_71" order="330" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MaximumCappingOfUnsecuredNetSmelterReturnNsr" xlink:label="loc_mtaff_MaximumCappingOfUnsecuredNetSmelterReturnNsr_72"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_MaximumCappingOfUnsecuredNetSmelterReturnNsr_72" order="340" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MaximumCappingOfNetSmelterReturnNsr" xlink:label="loc_mtaff_MaximumCappingOfNetSmelterReturnNsr_73"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_MaximumCappingOfNetSmelterReturnNsr_73" order="350" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PurchasePriceOfAgreement" xlink:label="loc_mtaff_PurchasePriceOfAgreement_74"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_PurchasePriceOfAgreement_74" order="360" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PurchasePriceOfAgreementPayableInShares" xlink:label="loc_mtaff_PurchasePriceOfAgreementPayableInShares_76"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_PurchasePriceOfAgreementPayableInShares_76" order="380" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_UpfrontPaymentMadeUponExerciseOfOption" xlink:label="loc_mtaff_UpfrontPaymentMadeUponExerciseOfOption_77"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_UpfrontPaymentMadeUponExerciseOfOption_77" order="390" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TermOfExerciseOfOption" xlink:label="loc_mtaff_TermOfExerciseOfOption_78"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_TermOfExerciseOfOption_78" order="400" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_79"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_79" order="410" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SharePurchaseWarrantOutstandingExercisableAcquisition" xlink:label="loc_mtaff_SharePurchaseWarrantOutstandingExercisableAcquisition_80"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_SharePurchaseWarrantOutstandingExercisableAcquisition_80" order="420" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PricePerSharePurchaseWarrantOutstandingExercisableAcquisition" xlink:label="loc_mtaff_PricePerSharePurchaseWarrantOutstandingExercisableAcquisition_81"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_PricePerSharePurchaseWarrantOutstandingExercisableAcquisition_81" order="430" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FairValueAtMeasurementDateShareOptionsGranted" xlink:label="loc_mtaff_FairValueAtMeasurementDateShareOptionsGranted_82"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_FairValueAtMeasurementDateShareOptionsGranted_82" order="440" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RiskFreeInterestRateWarrantsGranted" xlink:label="loc_mtaff_RiskFreeInterestRateWarrantsGranted_84"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RiskFreeInterestRateWarrantsGranted_84" order="460" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpectedDividendAsPercentageWarrantsGranted" xlink:label="loc_mtaff_ExpectedDividendAsPercentageWarrantsGranted_85"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_ExpectedDividendAsPercentageWarrantsGranted_85" order="470" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpectedVolatilityWarrantsGranted" xlink:label="loc_mtaff_ExpectedVolatilityWarrantsGranted_86"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_ExpectedVolatilityWarrantsGranted_86" order="480" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpectedLifeOfWarrantsGranted" xlink:label="loc_mtaff_ExpectedLifeOfWarrantsGranted_87"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_ExpectedLifeOfWarrantsGranted_87" order="490" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_WarrantsForfeitureRate" xlink:label="loc_mtaff_WarrantsForfeitureRate_88"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_WarrantsForfeitureRate_88" order="500" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfInferredResourceInOunces" xlink:label="loc_mtaff_NumberOfInferredResourceInOunces_89"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NumberOfInferredResourceInOunces_89" order="510" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfBulkTonnageModel" xlink:label="loc_mtaff_NumberOfBulkTonnageModel_90"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_NumberOfBulkTonnageModel_90" order="520" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AverageGradeOfGoldGramPerTonne" xlink:label="loc_mtaff_AverageGradeOfGoldGramPerTonne_91"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_AverageGradeOfGoldGramPerTonne_91" order="530" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SaleOfAcquisitionToOriginalOwner" xlink:label="loc_mtaff_SaleOfAcquisitionToOriginalOwner_92"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_SaleOfAcquisitionToOriginalOwner_92" order="540" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AlamosAcquisitionsMember" xlink:label="loc_mtaff_AlamosAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_AlamosAcquisitionsMember" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FifteenMileStreamAcquisitionsMember" xlink:label="loc_mtaff_FifteenMileStreamAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_FifteenMileStreamAcquisitionsMember" order="1" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DufferinEastAcquisitionMember" xlink:label="loc_mtaff_DufferinEastAcquisitionMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_DufferinEastAcquisitionMember" order="2" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_Cap-OesteSurEastAcquisitionMember" xlink:label="loc_mtaff_Cap-OesteSurEastAcquisitionMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_Cap-OesteSurEastAcquisitionMember" order="3" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SantaGertrudisAcquisitionsMember" xlink:label="loc_mtaff_SantaGertrudisAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_SantaGertrudisAcquisitionsMember" order="4" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValgoldAcquisitionsMember" xlink:label="loc_mtaff_ValgoldAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_ValgoldAcquisitionsMember" order="5" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AkasabaWestAcquisitionMember" xlink:label="loc_mtaff_AkasabaWestAcquisitionMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_AkasabaWestAcquisitionMember" order="6" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoeurAcquisitionsMember" xlink:label="loc_mtaff_CoeurAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_CoeurAcquisitionsMember" order="7" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MatamecAcquisitionsMember" xlink:label="loc_mtaff_MatamecAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_MatamecAcquisitionsMember" order="8" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FiloAcquisitionsMember" xlink:label="loc_mtaff_FiloAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_FiloAcquisitionsMember" order="9" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IepiAcquisitionsMember" xlink:label="loc_mtaff_IepiAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_IepiAcquisitionsMember" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OrefindersAcquisitionsMember" xlink:label="loc_mtaff_OrefindersAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_OrefindersAcquisitionsMember" order="11" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_Default" order="1"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_HalfOfNetSmelterReturnAcquiredPercentage" xlink:label="loc_mtaff_HalfOfNetSmelterReturnAcquiredPercentage"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_HalfOfNetSmelterReturnAcquiredPercentage" order="550" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RightOfFirstRefusal" xlink:label="loc_mtaff_RightOfFirstRefusal"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RightOfFirstRefusal" order="560" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_WeightedAverageFairValueOfWarrants" xlink:label="loc_mtaff_WeightedAverageFairValueOfWarrants"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_WeightedAverageFairValueOfWarrants" order="570" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExercisePriceOfWarrantsIssuedWithinUnits" xlink:label="loc_mtaff_ExercisePriceOfWarrantsIssuedWithinUnits"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_WeightedAverageExercisePriceOfWarrantsIssued_64" xlink:to="loc_mtaff_ExercisePriceOfWarrantsIssuedWithinUnits" order="0" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/InvestmentInSilverbackNarrativeDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_SubsidiariesMember" xlink:label="loc_ifrs-full_SubsidiariesMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_3" xlink:to="loc_ifrs-full_SubsidiariesMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ConsiderationPaidReceived" xlink:label="loc_ifrs-full_ConsiderationPaidReceived_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_ConsiderationPaidReceived_6" order="20" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/LoansPayableNarrativeDetails">
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfLoansPayableLineItems" xlink:label="loc_mtaff_DisclosureOfLoansPayableLineItems_0"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfLoansPayableTable" xlink:label="loc_mtaff_DisclosureOfLoansPayableTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_DisclosureOfLoansPayableTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TypeOfArrangementsAxis" xlink:label="loc_mtaff_TypeOfArrangementsAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfLoansPayableTable_1" xlink:to="loc_mtaff_TypeOfArrangementsAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TypeOfArrangementsDomain" xlink:label="loc_mtaff_TypeOfArrangementsDomain_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_TypeOfArrangementsAxis_2" xlink:to="loc_mtaff_TypeOfArrangementsDomain_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TypeOfArrangementsDomain" xlink:label="loc_mtaff_TypeOfArrangementsDomain_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_TypeOfArrangementsAxis_2" xlink:to="loc_mtaff_TypeOfArrangementsDomain_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanAgreementsWithLendersMember" xlink:label="loc_mtaff_LoanAgreementsWithLendersMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_TypeOfArrangementsDomain_3" xlink:to="loc_mtaff_LoanAgreementsWithLendersMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConvertibleLoanFacilityMember" xlink:label="loc_mtaff_ConvertibleLoanFacilityMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_TypeOfArrangementsDomain_3" xlink:to="loc_mtaff_ConvertibleLoanFacilityMember_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_RangeAxis" xlink:label="loc_ifrs-full_RangeAxis_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfLoansPayableTable_1" xlink:to="loc_ifrs-full_RangeAxis_6" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_RangesMember" xlink:label="loc_ifrs-full_RangesMember_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_6" xlink:to="loc_ifrs-full_RangesMember_7" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_RangesMember" xlink:label="loc_ifrs-full_RangesMember_7_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_6" xlink:to="loc_ifrs-full_RangesMember_7_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BottomOfRangeMember" xlink:label="loc_ifrs-full_BottomOfRangeMember_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesMember_7" xlink:to="loc_ifrs-full_BottomOfRangeMember_8" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TopOfRangeMember" xlink:label="loc_ifrs-full_TopOfRangeMember_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesMember_7" xlink:to="loc_ifrs-full_TopOfRangeMember_9" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfLoansPayableTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_10" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_10" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_11" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_11_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_10" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_11_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_InflectionCapitalIncMember" xlink:label="loc_mtaff_InflectionCapitalIncMember_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_11" xlink:to="loc_mtaff_InflectionCapitalIncMember_12" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfLoansPayableTable_1" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_13" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_13" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_14" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_14_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_13" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_14_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoeurAcquisitionsMember" xlink:label="loc_mtaff_CoeurAcquisitionsMember_15"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_14" xlink:to="loc_mtaff_CoeurAcquisitionsMember_15" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_16"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfLoansPayableTable_1" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_16" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NonadjustingEventsMember" xlink:label="loc_ifrs-full_NonadjustingEventsMember_17"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_16" xlink:to="loc_ifrs-full_NonadjustingEventsMember_17" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NonadjustingEventsMember" xlink:label="loc_ifrs-full_NonadjustingEventsMember_17_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_16" xlink:to="loc_ifrs-full_NonadjustingEventsMember_17_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_EventsAfterReportingPeriodMember" xlink:label="loc_mtaff_EventsAfterReportingPeriodMember_18"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NonadjustingEventsMember_17" xlink:to="loc_mtaff_EventsAfterReportingPeriodMember_18" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ProceedsFromCurrentBorrowings" xlink:label="loc_ifrs-full_ProceedsFromCurrentBorrowings_19"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_ProceedsFromCurrentBorrowings_19" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConvertibleDebenturePayable" xlink:label="loc_mtaff_ConvertibleDebenturePayable_20"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_ConvertibleDebenturePayable_20" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BorrowingsInterestRate" xlink:label="loc_ifrs-full_BorrowingsInterestRate_21"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_BorrowingsInterestRate_21" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AggregateOriginationDiscount" xlink:label="loc_mtaff_AggregateOriginationDiscount_22"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_AggregateOriginationDiscount_22" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PercentageOfEquityOwnershipOtherCompanyNeedsToMaintainInOrderForAutomaticConversionToApply" xlink:label="loc_mtaff_PercentageOfEquityOwnershipOtherCompanyNeedsToMaintainInOrderForAutomaticConversionToApply_23"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_PercentageOfEquityOwnershipOtherCompanyNeedsToMaintainInOrderForAutomaticConversionToApply_23" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TermOfConvertibleDebenturePayable" xlink:label="loc_mtaff_TermOfConvertibleDebenturePayable_24"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_TermOfConvertibleDebenturePayable_24" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanAgreementsForAggregateAmount" xlink:label="loc_mtaff_LoanAgreementsForAggregateAmount_25"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_LoanAgreementsForAggregateAmount_25" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SecuredLoanAgreementsAggregateAmount" xlink:label="loc_mtaff_SecuredLoanAgreementsAggregateAmount_26"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_SecuredLoanAgreementsAggregateAmount_26" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SharePurchaseWarrantsIssued" xlink:label="loc_mtaff_SharePurchaseWarrantsIssued_27"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_SharePurchaseWarrantsIssued_27" order="90" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ContingentPaymentForConsiderationForLoanAgreement" xlink:label="loc_mtaff_ContingentPaymentForConsiderationForLoanAgreement_29"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_ContingentPaymentForConsiderationForLoanAgreement_29" order="110" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_InterestReceivable" xlink:label="loc_ifrs-full_InterestReceivable_30"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_InterestReceivable_30" order="120" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_RepaymentsOfCurrentBorrowings" xlink:label="loc_ifrs-full_RepaymentsOfCurrentBorrowings_31"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_RepaymentsOfCurrentBorrowings_31" order="130" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanAgreementSettled" xlink:label="loc_mtaff_LoanAgreementSettled_32"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_LoanAgreementSettled_32" order="140" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LossOnSettlementOfLoanAgreement" xlink:label="loc_mtaff_LossOnSettlementOfLoanAgreement_33"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_LossOnSettlementOfLoanAgreement_33" order="150" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_34"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_34" order="160" use="optional"/>




<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ParValuePerShare" xlink:label="loc_ifrs-full_ParValuePerShare_37"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_ParValuePerShare_37" order="190" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfWarrantsIssued" xlink:label="loc_mtaff_NumberOfWarrantsIssued_38"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_NumberOfWarrantsIssued_38" order="200" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExercisePriceOfWarrantsIssued" xlink:label="loc_mtaff_ExercisePriceOfWarrantsIssued_39"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_ExercisePriceOfWarrantsIssued_39" order="210" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TermOfWarrants" xlink:label="loc_mtaff_TermOfWarrants_40"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_TermOfWarrants_40" order="220" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValueOfWarrantsIssued" xlink:label="loc_mtaff_ValueOfWarrantsIssued_41"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_ValueOfWarrantsIssued_41" order="230" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_InitialAdvanceOfConvertibleLoanFacility" xlink:label="loc_mtaff_InitialAdvanceOfConvertibleLoanFacility_42"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_InitialAdvanceOfConvertibleLoanFacility_42" order="240" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_UndrawnBorrowingFacilities" xlink:label="loc_ifrs-full_UndrawnBorrowingFacilities_43"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_UndrawnBorrowingFacilities_43" order="250" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MinimumTranchesOfConvertibleLoanFacility" xlink:label="loc_mtaff_MinimumTranchesOfConvertibleLoanFacility_44"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_MinimumTranchesOfConvertibleLoanFacility_44" order="260" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_InterestRateOnStandbyFundsAvailable" xlink:label="loc_mtaff_InterestRateOnStandbyFundsAvailable_45"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_InterestRateOnStandbyFundsAvailable_45" order="270" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PrincipalPaymentDuePeriod" xlink:label="loc_mtaff_PrincipalPaymentDuePeriod_46"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_PrincipalPaymentDuePeriod_46" order="280" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConversionPricePerShare" xlink:label="loc_mtaff_ConversionPricePerShare_47"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_ConversionPricePerShare_47" order="290" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConvertibleLoanFacilityDrewDown" xlink:label="loc_mtaff_ConvertibleLoanFacilityDrewDown"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_ConvertibleLoanFacilityDrewDown" order="310" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable" xlink:label="loc_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable" order="320" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments" order="330" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConvertibleLoanFacility" xlink:label="loc_mtaff_ConvertibleLoanFacility"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfLoansPayableLineItems_0" xlink:to="loc_mtaff_ConvertibleLoanFacility" order="340" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/RELATEDPARTYTRANSACTIONSANDBALANCESDetails1">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PresidentAndCeoMember" xlink:label="loc_mtaff_PresidentAndCeoMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" xlink:to="loc_mtaff_PresidentAndCeoMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_InflectionCapitalIncMember" xlink:label="loc_mtaff_InflectionCapitalIncMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" xlink:to="loc_mtaff_InflectionCapitalIncMember_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_6" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_6" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_7" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_7_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_6" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_7_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_HighStreamCorpMember" xlink:label="loc_mtaff_HighStreamCorpMember_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_7" xlink:to="loc_mtaff_HighStreamCorpMember_8" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_AmountsPayableRelatedPartyTransactions" xlink:label="loc_ifrs-full_AmountsPayableRelatedPartyTransactions_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_AmountsPayableRelatedPartyTransactions_9" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare" xlink:label="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_10" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions" xlink:label="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_11" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FinderFeesPaid" xlink:label="loc_mtaff_FinderFeesPaid_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_mtaff_FinderFeesPaid_12" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_13" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FinancingBonusReceived" xlink:label="loc_mtaff_FinancingBonusReceived_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_mtaff_FinancingBonusReceived_14" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_InterestReceivable" xlink:label="loc_ifrs-full_InterestReceivable_15"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_InterestReceivable_15" order="70" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/SupplementalDisclosureWithRespectToCashFlowsNarrativeDetails">
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SupplementalDisclosureOfCashFlowLineItems" xlink:label="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SupplementalDisclosureOfCashFlowTable" xlink:label="loc_mtaff_SupplementalDisclosureOfCashFlowTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_SupplementalDisclosureOfCashFlowTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowTable_1" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SantaGertrudisAcquisitonsMember" xlink:label="loc_mtaff_SantaGertrudisAcquisitonsMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" xlink:to="loc_mtaff_SantaGertrudisAcquisitonsMember_4" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FifteenMileStreamAcquisitionsMember" xlink:label="loc_mtaff_FifteenMileStreamAcquisitionsMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" xlink:to="loc_mtaff_FifteenMileStreamAcquisitionsMember_5" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AlamosAcquisitionsMember" xlink:label="loc_mtaff_AlamosAcquisitionsMember_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" xlink:to="loc_mtaff_AlamosAcquisitionsMember_6" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests" xlink:label="loc_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_7" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfSharePurchaseWarrantsIssuedForAcquisitionsOfRoyaltyInterests" xlink:label="loc_mtaff_NumberOfSharePurchaseWarrantsIssuedForAcquisitionsOfRoyaltyInterests_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_NumberOfSharePurchaseWarrantsIssuedForAcquisitionsOfRoyaltyInterests_8" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AggregateValueOfAcquisitionsOfRoyaltyInterests" xlink:label="loc_mtaff_AggregateValueOfAcquisitionsOfRoyaltyInterests_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_AggregateValueOfAcquisitionsOfRoyaltyInterests_9" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfCommonSharesIssuedForNetAssetsAcquired" xlink:label="loc_mtaff_NumberOfCommonSharesIssuedForNetAssetsAcquired_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_NumberOfCommonSharesIssuedForNetAssetsAcquired_10" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AggregateValueOfCommonSharesAndConvertibleDebentureForNetAssetsAcquired" xlink:label="loc_mtaff_AggregateValueOfCommonSharesAndConvertibleDebentureForNetAssetsAcquired_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_AggregateValueOfCommonSharesAndConvertibleDebentureForNetAssetsAcquired_11" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfSharePurchaseWarrantsIssuedOnSettlementOfLoansPayable" xlink:label="loc_mtaff_NumberOfSharePurchaseWarrantsIssuedOnSettlementOfLoansPayable_12_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_NumberOfSharePurchaseWarrantsIssuedOnSettlementOfLoansPayable_12_1" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants" xlink:label="loc_mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants_13" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ReallocationOfDeferredAcquisitionCostsToRoyaltyAndStreamInterestsOnClosingOfAcquisition" xlink:label="loc_mtaff_ReallocationOfDeferredAcquisitionCostsToRoyaltyAndStreamInterestsOnClosingOfAcquisition_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_ReallocationOfDeferredAcquisitionCostsToRoyaltyAndStreamInterestsOnClosingOfAcquisition_14" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ReallocationFromReservesForStockOptionsExercised" xlink:label="loc_mtaff_ReallocationFromReservesForStockOptionsExercised_15"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_ReallocationFromReservesForStockOptionsExercised_15" order="90" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement_16"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement_16" order="100" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ReallocationFromReservesForSharePurchaseWarrantsExercised" xlink:label="loc_mtaff_ReallocationFromReservesForSharePurchaseWarrantsExercised_17"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_ReallocationFromReservesForSharePurchaseWarrantsExercised_17" order="110" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfSharePurchaseWarrantsExercised" xlink:label="loc_mtaff_NumberOfSharePurchaseWarrantsExercised_18"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_NumberOfSharePurchaseWarrantsExercised_18" order="120" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfUnderwritersWarrantsIssued" xlink:label="loc_mtaff_NumberOfUnderwritersWarrantsIssued_19"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_NumberOfUnderwritersWarrantsIssued_19" order="130" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValueOfUnderwritersWarrantsIssued" xlink:label="loc_mtaff_ValueOfUnderwritersWarrantsIssued_20"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_ValueOfUnderwritersWarrantsIssued_20" order="140" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfCommonSharesAcquisition" xlink:label="loc_mtaff_NumberOfCommonSharesAcquisition_21"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_NumberOfCommonSharesAcquisition_21" order="150" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValueOfCommonSharesAcquisition" xlink:label="loc_mtaff_ValueOfCommonSharesAcquisition_22"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xlink:to="loc_mtaff_ValueOfCommonSharesAcquisition_22" order="160" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValgoldAcquisitionsMember" xlink:label="loc_mtaff_ValgoldAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" xlink:to="loc_mtaff_ValgoldAcquisitionsMember" order="20" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/FinancialInstrumentsNarrativeDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="loc_ifrs-full_TypesOfRisksAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_TypesOfRisksAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfRisksAxis_2" xlink:to="loc_ifrs-full_TypesOfRisksMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfRisksAxis_2" xlink:to="loc_ifrs-full_TypesOfRisksMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CurrencyRiskMember" xlink:label="loc_ifrs-full_CurrencyRiskMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksMember_3" xlink:to="loc_ifrs-full_CurrencyRiskMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SensitivityAnalysisVariancePrice" xlink:label="loc_mtaff_SensitivityAnalysisVariancePrice_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_mtaff_SensitivityAnalysisVariancePrice_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ValueAtRisk" xlink:label="loc_ifrs-full_ValueAtRisk_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_ValueAtRisk_6" order="20" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/EventsAfterReportingDateNarrativeDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_1" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NonadjustingEventsMember" xlink:label="loc_ifrs-full_NonadjustingEventsMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_2" xlink:to="loc_ifrs-full_NonadjustingEventsMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NonadjustingEventsMember" xlink:label="loc_ifrs-full_NonadjustingEventsMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_2" xlink:to="loc_ifrs-full_NonadjustingEventsMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_EventsAfterReportingPeriodMember" xlink:label="loc_mtaff_EventsAfterReportingPeriodMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NonadjustingEventsMember_3" xlink:to="loc_mtaff_EventsAfterReportingPeriodMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TypeOfArrangementsAxis" xlink:label="loc_mtaff_TypeOfArrangementsAxis_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_1" xlink:to="loc_mtaff_TypeOfArrangementsAxis_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TypeOfArrangementsDomain" xlink:label="loc_mtaff_TypeOfArrangementsDomain_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_TypeOfArrangementsAxis_5" xlink:to="loc_mtaff_TypeOfArrangementsDomain_6" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_TypeOfArrangementsDomain" xlink:label="loc_mtaff_TypeOfArrangementsDomain_6_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_TypeOfArrangementsAxis_5" xlink:to="loc_mtaff_TypeOfArrangementsDomain_6_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PurchaseAndSaleAgreementMember" xlink:label="loc_mtaff_PurchaseAndSaleAgreementMember_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_TypeOfArrangementsDomain_6" xlink:to="loc_mtaff_PurchaseAndSaleAgreementMember_7" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LegalEntitiesAxis" xlink:label="loc_mtaff_LegalEntitiesAxis_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_1" xlink:to="loc_mtaff_LegalEntitiesAxis_8" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LegalEntitiesDomain" xlink:label="loc_mtaff_LegalEntitiesDomain_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_LegalEntitiesAxis_8" xlink:to="loc_mtaff_LegalEntitiesDomain_9" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LegalEntitiesDomain" xlink:label="loc_mtaff_LegalEntitiesDomain_9_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_LegalEntitiesAxis_8" xlink:to="loc_mtaff_LegalEntitiesDomain_9_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OrionNsrRoyaltyMember" xlink:label="loc_mtaff_OrionNsrRoyaltyMember_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LegalEntitiesDomain_9" xlink:to="loc_mtaff_OrionNsrRoyaltyMember_10" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_PercentageOfAdditionalInterestAcquired" xlink:label="loc_mtaff_PercentageOfAdditionalInterestAcquired_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0" xlink:to="loc_mtaff_PercentageOfAdditionalInterestAcquired_11" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AmountOfAdditionalInterestAcquired" xlink:label="loc_mtaff_AmountOfAdditionalInterestAcquired_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0" xlink:to="loc_mtaff_AmountOfAdditionalInterestAcquired_12" order="20" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RepaymentOfThirdPartyLoans" xlink:label="loc_mtaff_RepaymentOfThirdPartyLoans_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0" xlink:to="loc_mtaff_RepaymentOfThirdPartyLoans_14" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConvertibleLoanFacilityDrewDown" xlink:label="loc_mtaff_ConvertibleLoanFacilityDrewDown"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0" xlink:to="loc_mtaff_ConvertibleLoanFacilityDrewDown" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AmountPaidOnSigningOfAgreement" xlink:label="loc_mtaff_AmountPaidOnSigningOfAgreement"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0" xlink:to="loc_mtaff_AmountPaidOnSigningOfAgreement" order="60" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ConditionalAmountPayableUponAchievementOfCertainMilestones" xlink:label="loc_mtaff_ConditionalAmountPayableUponAchievementOfCertainMilestones"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_0" xlink:to="loc_mtaff_ConditionalAmountPayableUponAchievementOfCertainMilestones" order="70" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsDetails">
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis" xlink:label="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xlink:to="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain" xlink:label="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_2" xlink:to="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain" xlink:label="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_2" xlink:to="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoeurStreamAndRoyaltyInterestsMember" xlink:label="loc_mtaff_CoeurStreamAndRoyaltyInterestsMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_3" xlink:to="loc_mtaff_CoeurStreamAndRoyaltyInterestsMember_4" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OtherRoyaltyInterestsMember" xlink:label="loc_mtaff_OtherRoyaltyInterestsMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_3" xlink:to="loc_mtaff_OtherRoyaltyInterestsMember_5" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AlamosRoyaltyInterestsMember" xlink:label="loc_mtaff_AlamosRoyaltyInterestsMember_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_3" xlink:to="loc_mtaff_AlamosRoyaltyInterestsMember_6" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_7" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_7" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_7" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AlamosAcquisitionsMember" xlink:label="loc_mtaff_AlamosAcquisitionsMember_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_AlamosAcquisitionsMember_9" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValgoldAcquisitionsMember" xlink:label="loc_mtaff_ValgoldAcquisitionsMember_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_ValgoldAcquisitionsMember_10" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_SantaGertrudisAcquisitonsMember" xlink:label="loc_mtaff_SantaGertrudisAcquisitonsMember_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_SantaGertrudisAcquisitonsMember_11" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoseAcquisitionsMember" xlink:label="loc_mtaff_CoseAcquisitionsMember_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_CoseAcquisitionsMember_12" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FifteenMileStreamAcquisitionsMember" xlink:label="loc_mtaff_FifteenMileStreamAcquisitionsMember_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_FifteenMileStreamAcquisitionsMember_13" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_IepiAcquisitionsMember" xlink:label="loc_mtaff_IepiAcquisitionsMember_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_IepiAcquisitionsMember_14" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_FiloAcquisitionsMember" xlink:label="loc_mtaff_FiloAcquisitionsMember_15"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_FiloAcquisitionsMember_15" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OrefindersAcquisitionsMember" xlink:label="loc_mtaff_OrefindersAcquisitionsMember_16"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_OrefindersAcquisitionsMember_16" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MatamecAcquisitionsMember" xlink:label="loc_mtaff_MatamecAcquisitionsMember_17"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_MatamecAcquisitionsMember_17" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoeurAcquisitionsMember" xlink:label="loc_mtaff_CoeurAcquisitionsMember_18"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_CoeurAcquisitionsMember_18" order="90" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AkasabaWestAcquisitionMember" xlink:label="loc_mtaff_AkasabaWestAcquisitionMember_19"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_8" xlink:to="loc_mtaff_AkasabaWestAcquisitionMember_19" order="100" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RoyaltyAndStreamInterests" xlink:label="loc_mtaff_RoyaltyAndStreamInterests_20"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RoyaltyAndStreamInterests_20" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts" xlink:label="loc_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_21"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_21" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OtherAcquisitionCostsOfRoyaltyAndStreamInterests" xlink:label="loc_mtaff_OtherAcquisitionCostsOfRoyaltyAndStreamInterests_22"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_OtherAcquisitionCostsOfRoyaltyAndStreamInterests_22" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DepletionOfRoyaltyAndStreamInterests" xlink:label="loc_mtaff_DepletionOfRoyaltyAndStreamInterests_23"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_DepletionOfRoyaltyAndStreamInterests_23" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RecoveriesOfRoyaltyAndStreamInterests" xlink:label="loc_mtaff_RecoveriesOfRoyaltyAndStreamInterests_24"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_RecoveriesOfRoyaltyAndStreamInterests_24" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax" xlink:label="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_25"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_25" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_HistoricalCostsRoyaltyAndStreamInterests" xlink:label="loc_mtaff_HistoricalCostsRoyaltyAndStreamInterests_26"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_HistoricalCostsRoyaltyAndStreamInterests_26" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AccumulatedDepletionRoyaltyAndStreamInterests" xlink:label="loc_mtaff_AccumulatedDepletionRoyaltyAndStreamInterests_27"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_AccumulatedDepletionRoyaltyAndStreamInterests_27" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OtherAdditionsRoyaltyAndStreamInterests" xlink:label="loc_mtaff_OtherAdditionsRoyaltyAndStreamInterests"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_OtherAdditionsRoyaltyAndStreamInterests" order="90" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionDetails">
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoeurAcquisitionsMember" xlink:label="loc_mtaff_CoeurAcquisitionsMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" xlink:to="loc_mtaff_CoeurAcquisitionsMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValgoldAcquisitionsMember" xlink:label="loc_mtaff_ValgoldAcquisitionsMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_3" xlink:to="loc_mtaff_ValgoldAcquisitionsMember_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract" xlink:label="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract_6" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EquityInterestsOfAcquirer" xlink:label="loc_ifrs-full_EquityInterestsOfAcquirer_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract_6" xlink:to="loc_ifrs-full_EquityInterestsOfAcquirer_7" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ReserveForSharePurchaseWarrants" xlink:label="loc_mtaff_ReserveForSharePurchaseWarrants_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract_6" xlink:to="loc_mtaff_ReserveForSharePurchaseWarrants_8" order="20" use="optional"/>


<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ConsiderationPaidReceived" xlink:label="loc_ifrs-full_ConsiderationPaidReceived_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract_6" xlink:to="loc_ifrs-full_ConsiderationPaidReceived_10" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination" xlink:label="loc_ifrs-full_AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract_6" xlink:to="loc_ifrs-full_AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination_11" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract" xlink:label="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xlink:to="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate" xlink:label="loc_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" xlink:to="loc_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_13" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TradeAndOtherReceivables" xlink:label="loc_ifrs-full_TradeAndOtherReceivables_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" xlink:to="loc_ifrs-full_TradeAndOtherReceivables_14" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CurrentTradeReceivables" xlink:label="loc_ifrs-full_CurrentTradeReceivables_15"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" xlink:to="loc_ifrs-full_CurrentTradeReceivables_15" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:label="loc_ifrs-full_IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate_16"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" xlink:to="loc_ifrs-full_IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate_16" order="30" use="optional"/>


<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_EndeavorStreamInterestAsOfAcquisitionDate" xlink:label="loc_mtaff_EndeavorStreamInterestAsOfAcquisitionDate_18"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" xlink:to="loc_mtaff_EndeavorStreamInterestAsOfAcquisitionDate_18" order="50" use="optional"/>


<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate" xlink:label="loc_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_20"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" xlink:to="loc_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_20" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed" xlink:label="loc_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_21"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_12" xlink:to="loc_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_21" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_LiabilitiesIncurred" xlink:label="loc_ifrs-full_LiabilitiesIncurred"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract_6" xlink:to="loc_ifrs-full_LiabilitiesIncurred" order="60" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfTransactionsRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombinationDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_SubsidiariesMember" xlink:label="loc_ifrs-full_SubsidiariesMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" xlink:to="loc_ifrs-full_SubsidiariesMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:label="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_6" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DividendsReceived" xlink:label="loc_ifrs-full_DividendsReceived_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_DividendsReceived_7" order="30" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfSubsidiaryDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable_1" order="10" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_SubsidiariesMember" xlink:label="loc_ifrs-full_SubsidiariesMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" xlink:to="loc_ifrs-full_SubsidiariesMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CurrentAssets" xlink:label="loc_ifrs-full_CurrentAssets_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_CurrentAssets_5" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NoncurrentAssets" xlink:label="loc_ifrs-full_NoncurrentAssets_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_NoncurrentAssets_6" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_Assets" xlink:label="loc_ifrs-full_Assets_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_Assets_7" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_Liabilities" xlink:label="loc_ifrs-full_Liabilities_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_Liabilities_8" order="50" use="optional"/>




<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ComprehensiveIncome" xlink:label="loc_ifrs-full_ComprehensiveIncome_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_ifrs-full_ComprehensiveIncome_11" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_RevenueFromStreamInterest" xlink:label="loc_mtaff_RevenueFromStreamInterest"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_mtaff_RevenueFromStreamInterest" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DepletionOnStreamInterest" xlink:label="loc_mtaff_DepletionOnStreamInterest"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xlink:to="loc_mtaff_DepletionOnStreamInterest" order="70" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutLoansPayableDetails">
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanPayableLineItems" xlink:label="loc_mtaff_LoanPayableLineItems_0"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanPayableTable" xlink:label="loc_mtaff_LoanPayableTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_mtaff_LoanPayableTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanPayableAxis" xlink:label="loc_mtaff_LoanPayableAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_LoanPayableTable_1" xlink:to="loc_mtaff_LoanPayableAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanPayableDomain" xlink:label="loc_mtaff_LoanPayableDomain_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_LoanPayableAxis_2" xlink:to="loc_mtaff_LoanPayableDomain_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoanPayableDomain" xlink:label="loc_mtaff_LoanPayableDomain_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_LoanPayableAxis_2" xlink:to="loc_mtaff_LoanPayableDomain_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoeurDebentureMember" xlink:label="loc_mtaff_CoeurDebentureMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableDomain_3" xlink:to="loc_mtaff_CoeurDebentureMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_OtherLoanPayableMember" xlink:label="loc_mtaff_OtherLoanPayableMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableDomain_3" xlink:to="loc_mtaff_OtherLoanPayableMember_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_Borrowings" xlink:label="loc_ifrs-full_Borrowings_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_ifrs-full_Borrowings_6" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_AdditionsToLoanPayable" xlink:label="loc_mtaff_AdditionsToLoanPayable_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_mtaff_AdditionsToLoanPayable_7" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_InducementsToLoanPayable" xlink:label="loc_mtaff_InducementsToLoanPayable_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_mtaff_InducementsToLoanPayable_8" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_InterestExpense" xlink:label="loc_ifrs-full_InterestExpense_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_ifrs-full_InterestExpense_9" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_RepaymentsOfCurrentBorrowings" xlink:label="loc_ifrs-full_RepaymentsOfCurrentBorrowings_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_ifrs-full_RepaymentsOfCurrentBorrowings_10" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_LoansSettlement" xlink:label="loc_mtaff_LoansSettlement_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_mtaff_LoansSettlement_11" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CurrencyTranslationAdjustmentsRelatedToBorrowings" xlink:label="loc_mtaff_CurrencyTranslationAdjustmentsRelatedToBorrowings_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_mtaff_CurrencyTranslationAdjustmentsRelatedToBorrowings_12" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ShorttermBorrowings" xlink:label="loc_ifrs-full_ShorttermBorrowings_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_ifrs-full_ShorttermBorrowings_13" order="80" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_LongtermBorrowings" xlink:label="loc_ifrs-full_LongtermBorrowings_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_LoanPayableLineItems_0" xlink:to="loc_ifrs-full_LongtermBorrowings_14" order="90" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfDeferredIncomeTaxAssetLiabilityDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:label="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:label="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:label="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable_1" xlink:to="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:label="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_2" xlink:to="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:label="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_2" xlink:to="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MineralExpendituresAndCapitalAssetsMember" xlink:label="loc_mtaff_MineralExpendituresAndCapitalAssetsMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_3" xlink:to="loc_mtaff_MineralExpendituresAndCapitalAssetsMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ShareIssueCostsMember" xlink:label="loc_mtaff_ShareIssueCostsMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_3" xlink:to="loc_mtaff_ShareIssueCostsMember_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NonCapitalLossesAndOtherMember" xlink:label="loc_mtaff_NonCapitalLossesAndOtherMember_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_3" xlink:to="loc_mtaff_NonCapitalLossesAndOtherMember_6" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract" xlink:label="loc_ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_0" xlink:to="loc_ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract_7" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DeferredTaxAssetsAbstract" xlink:label="loc_mtaff_DeferredTaxAssetsAbstract_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract_7" xlink:to="loc_mtaff_DeferredTaxAssetsAbstract_8" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DeferredTaxAssets" xlink:label="loc_ifrs-full_DeferredTaxAssets_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DeferredTaxAssetsAbstract_8" xlink:to="loc_ifrs-full_DeferredTaxAssets_9" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised" xlink:label="loc_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DeferredTaxAssetsAbstract_8" xlink:to="loc_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised_10" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="loc_ifrs-full_DeferredTaxLiabilities_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DeferredTaxAssetsAbstract_8" xlink:to="loc_ifrs-full_DeferredTaxLiabilities_11" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DeferredTaxLiabilityAsset" xlink:label="loc_ifrs-full_DeferredTaxLiabilityAsset_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DeferredTaxAssetsAbstract_8" xlink:to="loc_ifrs-full_DeferredTaxLiabilityAsset_12" order="30" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfRangeOfExercisePricesOfOutstandingShareOptionsDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems" xlink:label="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable" xlink:label="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateAxis" xlink:label="loc_mtaff_ExpiryDateAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable_1" xlink:to="loc_mtaff_ExpiryDateAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateDomain" xlink:label="loc_mtaff_ExpiryDateDomain_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_ExpiryDateAxis_2" xlink:to="loc_mtaff_ExpiryDateDomain_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateDomain" xlink:label="loc_mtaff_ExpiryDateDomain_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_ExpiryDateAxis_2" xlink:to="loc_mtaff_ExpiryDateDomain_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateJul152021Member" xlink:label="loc_mtaff_ExpiryDateJul152021Member_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateJul152021Member_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateNov152021Member" xlink:label="loc_mtaff_ExpiryDateNov152021Member_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateNov152021Member_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateNov302021Member" xlink:label="loc_mtaff_ExpiryDateNov302021Member_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateNov302021Member_6" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateMar062022Member" xlink:label="loc_mtaff_ExpiryDateMar062022Member_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateMar062022Member_7" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateJul312022Member" xlink:label="loc_mtaff_ExpiryDateJul312022Member_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateJul312022Member_8" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateMar012023Member" xlink:label="loc_mtaff_ExpiryDateMar012023Member_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateMar012023Member_9" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateSep182023Member" xlink:label="loc_mtaff_ExpiryDateSep182023Member_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateSep182023Member_10" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateJan042024Member" xlink:label="loc_mtaff_ExpiryDateJan042024Member_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateJan042024Member_11" order="70" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_ExercisePriceOfOutstandingShareOptions" xlink:label="loc_ifrs-full_ExercisePriceOfOutstandingShareOptions_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems_0" xlink:to="loc_ifrs-full_ExercisePriceOfOutstandingShareOptions_12" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NumberOfOutstandingShareOptions" xlink:label="loc_ifrs-full_NumberOfOutstandingShareOptions_13"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems_0" xlink:to="loc_ifrs-full_NumberOfOutstandingShareOptions_13" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_14"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems_0" xlink:to="loc_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_14" order="30" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfRangeOfExercisePricesOfOutstandingWarrantsDetails">
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ScheduleOfWarrantLineItems" xlink:label="loc_mtaff_ScheduleOfWarrantLineItems_0"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ScheduleOfWarrantTable" xlink:label="loc_mtaff_ScheduleOfWarrantTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_ScheduleOfWarrantLineItems_0" xlink:to="loc_mtaff_ScheduleOfWarrantTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateAxis" xlink:label="loc_mtaff_ExpiryDateAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_ScheduleOfWarrantTable_1" xlink:to="loc_mtaff_ExpiryDateAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateDomain" xlink:label="loc_mtaff_ExpiryDateDomain_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mtaff_ExpiryDateAxis_2" xlink:to="loc_mtaff_ExpiryDateDomain_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateDomain" xlink:label="loc_mtaff_ExpiryDateDomain_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mtaff_ExpiryDateAxis_2" xlink:to="loc_mtaff_ExpiryDateDomain_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateOctober062019Member" xlink:label="loc_mtaff_ExpiryDateOctober062019Member_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateOctober062019Member_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateNovember082020Member" xlink:label="loc_mtaff_ExpiryDateNovember082020Member_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateNovember082020Member_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateDecember052020Member" xlink:label="loc_mtaff_ExpiryDateDecember052020Member_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateDecember052020Member_6" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateDecember212020Member" xlink:label="loc_mtaff_ExpiryDateDecember212020Member_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateDecember212020Member_7" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateJanuary042021Member" xlink:label="loc_mtaff_ExpiryDateJanuary042021Member_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateJanuary042021Member_8" order="40" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateAugust112021Member" xlink:label="loc_mtaff_ExpiryDateAugust112021Member_9"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateAugust112021Member_9" order="50" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ExpiryDateAugust302021Member" xlink:label="loc_mtaff_ExpiryDateAugust302021Member_10"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ExpiryDateDomain_3" xlink:to="loc_mtaff_ExpiryDateAugust302021Member_10" order="60" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_WarrantsExercisePrice" xlink:label="loc_mtaff_WarrantsExercisePrice_11"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ScheduleOfWarrantLineItems_0" xlink:to="loc_mtaff_WarrantsExercisePrice_11" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NumberOfOutstandingWarrants" xlink:label="loc_mtaff_NumberOfOutstandingWarrants_12"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_ScheduleOfWarrantLineItems_0" xlink:to="loc_mtaff_NumberOfOutstandingWarrants_12" order="20" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfTransactionsBetweenRelatedPartiesDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_2" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_KeyManagementPersonnelOfEntityOrParentMember" xlink:label="loc_ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" xlink:to="loc_ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DirectorsMember" xlink:label="loc_mtaff_DirectorsMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_3" xlink:to="loc_mtaff_DirectorsMember_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:label="loc_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_6" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:label="loc_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_7" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_KeyManagementPersonnelCompensation" xlink:label="loc_ifrs-full_KeyManagementPersonnelCompensation_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_KeyManagementPersonnelCompensation_8" order="30" use="optional"/>
</definitionLink>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfDetailedInformationAboutFinancialInstrumentsMeasuredAtFairValueDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" order="0" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_2"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_2" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:label="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember_3"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_2" xlink:to="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember_3" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:label="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember_3_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_2" xlink:to="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember_3_Default" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_Level1OfFairValueHierarchyMember" xlink:label="loc_ifrs-full_Level1OfFairValueHierarchyMember_4"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember_3" xlink:to="loc_ifrs-full_Level1OfFairValueHierarchyMember_4" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_Level2OfFairValueHierarchyMember" xlink:label="loc_ifrs-full_Level2OfFairValueHierarchyMember_5"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember_3" xlink:to="loc_ifrs-full_Level2OfFairValueHierarchyMember_5" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_Level3OfFairValueHierarchyMember" xlink:label="loc_ifrs-full_Level3OfFairValueHierarchyMember_6"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AllLevelsOfFairValueHierarchyMember_3" xlink:to="loc_ifrs-full_Level3OfFairValueHierarchyMember_6" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CategoriesOfFinancialAssetsAbstract" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsAbstract_7"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_CategoriesOfFinancialAssetsAbstract_7" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_CurrentTradeReceivables" xlink:label="loc_ifrs-full_CurrentTradeReceivables_8"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsAbstract_7" xlink:to="loc_ifrs-full_CurrentTradeReceivables_8" order="0" use="optional"/>
</definitionLink>

<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#RoyaltyStreamAndOtherInterestsTables" roleURI="http://www.metallaroyalty.com/role/RoyaltyStreamAndOtherInterestsTables"/>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/RoyaltyStreamAndOtherInterestsTables"><loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock" xlink:label="loc_mtaff_DisclosureOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems" xlink:to="loc_mtaff_DisclosureOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionExplanatoryTextBlock" xlink:label="loc_mtaff_DisclosureOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionExplanatoryTextBlock"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems" xlink:to="loc_mtaff_DisclosureOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionExplanatoryTextBlock" order="30" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable" xlink:label="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems" xlink:to="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable" order="10" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-full_BusinessCombinationsAxis"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable" xlink:to="loc_ifrs-full_BusinessCombinationsAxis" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_CoeurAcquisitionsMember" xlink:label="loc_mtaff_CoeurAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_CoeurAcquisitionsMember" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ValgoldAcquisitionsMember" xlink:label="loc_mtaff_ValgoldAcquisitionsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:to="loc_mtaff_ValgoldAcquisitionsMember" order="10" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_EntitysTotalForBusinessCombinationsMember" xlink:label="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis" xlink:to="loc_ifrs-full_EntitysTotalForBusinessCombinationsMember_Default" order="1"/>
</definitionLink>
<roleRef xlink:type="simple" xlink:href="mtaff-20190531.xsd#ScheduleOfSignificantTemporaryDifferencesUnusedTaxCreditsAndUnusedTaxLossesDetails" roleURI="http://www.metallaroyalty.com/role/ScheduleOfSignificantTemporaryDifferencesUnusedTaxCreditsAndUnusedTaxLossesDetails"/>
<definitionLink xlink:type="extended" xlink:role="http://www.metallaroyalty.com/role/ScheduleOfSignificantTemporaryDifferencesUnusedTaxCreditsAndUnusedTaxLossesDetails"><loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:label="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract" xlink:label="loc_ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:to="loc_ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract" order="20" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_DeferredTaxAssetsAbstract" xlink:label="loc_mtaff_DeferredTaxAssetsAbstract"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract" xlink:to="loc_mtaff_DeferredTaxAssetsAbstract" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised" xlink:label="loc_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mtaff_DeferredTaxAssetsAbstract" xlink:to="loc_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:label="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:to="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" order="10" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:label="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:to="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:label="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:to="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_MineralExpendituresAndCapitalAssetsMember" xlink:label="loc_mtaff_MineralExpendituresAndCapitalAssetsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:to="loc_mtaff_MineralExpendituresAndCapitalAssetsMember" order="0" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_ShareIssueCostsMember" xlink:label="loc_mtaff_ShareIssueCostsMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:to="loc_mtaff_ShareIssueCostsMember" order="1" use="optional"/>
<loc xlink:type="locator" xlink:href="mtaff-20190531.xsd#mtaff_NonCapitalLossesAndOtherMember" xlink:label="loc_mtaff_NonCapitalLossesAndOtherMember"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:to="loc_mtaff_NonCapitalLossesAndOtherMember" order="2" use="optional"/>
<loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2018-03-16/full_ifrs/full_ifrs-cor_2018-03-16.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:label="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_Default"/>
<definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:to="loc_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_Default" order="1"/>
</definitionLink>
</linkbase>
