<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5c -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#Cover" roleURI="http://baselmedical.com/role/Cover" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#InterimConsolidatedStatementOfProfitOrLossAndComprehensiveIncome" roleURI="http://baselmedical.com/role/InterimConsolidatedStatementOfProfitOrLossAndComprehensiveIncome" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#InterimConsolidatedBalanceSheets" roleURI="http://baselmedical.com/role/InterimConsolidatedBalanceSheets" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#InterimConsolidatedStatementOfChangesInShareholdersEquity" roleURI="http://baselmedical.com/role/InterimConsolidatedStatementOfChangesInShareholdersEquity" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#InterimConsolidatedStatementOfCashFlows" roleURI="http://baselmedical.com/role/InterimConsolidatedStatementOfCashFlows" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/cyd/2025/cyd-2025.xsd#CybersecurityRiskManagementAndStrategyDisclosure" roleURI="http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/cyd/2025/cyd-2025.xsd#MaterialCybersecurityIncidentDisclosure" roleURI="http://xbrl.sec.gov/cyd/role/MaterialCybersecurityIncidentDisclosure" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#General" roleURI="http://baselmedical.com/role/General" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#MaterialAccountingPolicyInformation" roleURI="http://baselmedical.com/role/MaterialAccountingPolicyInformation" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#SignificantAccountingJudgementsAndEstimates" roleURI="http://baselmedical.com/role/SignificantAccountingJudgementsAndEstimates" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#Revenue" roleURI="http://baselmedical.com/role/Revenue" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#OtherIncome" roleURI="http://baselmedical.com/role/OtherIncome" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FinanceCost" roleURI="http://baselmedical.com/role/FinanceCost" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ProfitlossBeforeTax" roleURI="http://baselmedical.com/role/ProfitlossBeforeTax" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#IncomeTaxExpense" roleURI="http://baselmedical.com/role/IncomeTaxExpense" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#RightOfUseAssets" roleURI="http://baselmedical.com/role/RightOfUseAssets" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#PropertyAndEquipment" roleURI="http://baselmedical.com/role/PropertyAndEquipment" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#Inventories" roleURI="http://baselmedical.com/role/Inventories" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#TradeAndOtherReceivables" roleURI="http://baselmedical.com/role/TradeAndOtherReceivables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#CashAndCashEquivalents" roleURI="http://baselmedical.com/role/CashAndCashEquivalents" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#AmountDueFromtoRelatedParties" roleURI="http://baselmedical.com/role/AmountDueFromtoRelatedParties" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#Borrowings" roleURI="http://baselmedical.com/role/Borrowings" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#TradeAndOtherPayables" roleURI="http://baselmedical.com/role/TradeAndOtherPayables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#AmountDueToFormerDirector" roleURI="http://baselmedical.com/role/AmountDueToFormerDirector" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ShareCapital" roleURI="http://baselmedical.com/role/ShareCapital" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#Leases" roleURI="http://baselmedical.com/role/Leases" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#SignificantRelatedPartyTransactions" roleURI="http://baselmedical.com/role/SignificantRelatedPartyTransactions" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ImpairmentLossOnGoodwill" roleURI="http://baselmedical.com/role/ImpairmentLossOnGoodwill" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ShareBasedPaymentReserve" roleURI="http://baselmedical.com/role/ShareBasedPaymentReserve" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#DeferredTaxAssetsAndLiabilities" roleURI="http://baselmedical.com/role/DeferredTaxAssetsAndLiabilities" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FairValueOfAssetsAndLiabilities" roleURI="http://baselmedical.com/role/FairValueOfAssetsAndLiabilities" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FinancialRiskManagement" roleURI="http://baselmedical.com/role/FinancialRiskManagement" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FinancialInstrumentsByCategory" roleURI="http://baselmedical.com/role/FinancialInstrumentsByCategory" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#CapitalManagement" roleURI="http://baselmedical.com/role/CapitalManagement" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#EventsOccurringAfterReportingPeriod" roleURI="http://baselmedical.com/role/EventsOccurringAfterReportingPeriod" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#MaterialAccountingPolicyInformationPolicies" roleURI="http://baselmedical.com/role/MaterialAccountingPolicyInformationPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#GeneralTables" roleURI="http://baselmedical.com/role/GeneralTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#MaterialAccountingPolicyInformationTables" roleURI="http://baselmedical.com/role/MaterialAccountingPolicyInformationTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#RevenueTables" roleURI="http://baselmedical.com/role/RevenueTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#OtherIncomeTables" roleURI="http://baselmedical.com/role/OtherIncomeTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FinanceCostTables" roleURI="http://baselmedical.com/role/FinanceCostTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ProfitlossBeforeTaxTables" roleURI="http://baselmedical.com/role/ProfitlossBeforeTaxTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#IncomeTaxExpenseTables" roleURI="http://baselmedical.com/role/IncomeTaxExpenseTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#RightOfUseAssetsTables" roleURI="http://baselmedical.com/role/RightOfUseAssetsTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#PropertyAndEquipmentTables" roleURI="http://baselmedical.com/role/PropertyAndEquipmentTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#InventoriesTables" roleURI="http://baselmedical.com/role/InventoriesTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#TradeAndOtherReceivablesTables" roleURI="http://baselmedical.com/role/TradeAndOtherReceivablesTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#CashAndCashEquivalentsTables" roleURI="http://baselmedical.com/role/CashAndCashEquivalentsTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#AmountDueFromtoRelatedPartiesTables" roleURI="http://baselmedical.com/role/AmountDueFromtoRelatedPartiesTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#BorrowingsTables" roleURI="http://baselmedical.com/role/BorrowingsTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#TradeAndOtherPayablesTables" roleURI="http://baselmedical.com/role/TradeAndOtherPayablesTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#LeasesTables" roleURI="http://baselmedical.com/role/LeasesTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#SignificantRelatedPartyTransactionsTables" roleURI="http://baselmedical.com/role/SignificantRelatedPartyTransactionsTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ImpairmentLossOnGoodwillTables" roleURI="http://baselmedical.com/role/ImpairmentLossOnGoodwillTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ShareBasedPaymentReserveTables" roleURI="http://baselmedical.com/role/ShareBasedPaymentReserveTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#DeferredTaxAssetsAndLiabilitiesTables" roleURI="http://baselmedical.com/role/DeferredTaxAssetsAndLiabilitiesTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FinancialRiskManagementTables" roleURI="http://baselmedical.com/role/FinancialRiskManagementTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FinancialInstrumentsByCategoryTables" roleURI="http://baselmedical.com/role/FinancialInstrumentsByCategoryTables" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfActivitiesOfSubsidiariesDetails" roleURI="http://baselmedical.com/role/ScheduleOfActivitiesOfSubsidiariesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#GeneralDetailsNarrative" roleURI="http://baselmedical.com/role/GeneralDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfExpectedUsefulLivesForPropertyPlantAndEquipmentDetails" roleURI="http://baselmedical.com/role/ScheduleOfExpectedUsefulLivesForPropertyPlantAndEquipmentDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#SignificantAccountingJudgementsAndEstimatesDetailsNarrative" roleURI="http://baselmedical.com/role/SignificantAccountingJudgementsAndEstimatesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#SummaryOfRevenueFromTransferOfGoodsAndServicesDetails" roleURI="http://baselmedical.com/role/SummaryOfRevenueFromTransferOfGoodsAndServicesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfOtherIncomeDetails" roleURI="http://baselmedical.com/role/ScheduleOfOtherIncomeDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfFinanceCostDetails" roleURI="http://baselmedical.com/role/ScheduleOfFinanceCostDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfProfitBeforeTaxDetails" roleURI="http://baselmedical.com/role/ScheduleOfProfitBeforeTaxDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfComponentOfIncomeTaxExpenseDetails" roleURI="http://baselmedical.com/role/ScheduleOfComponentOfIncomeTaxExpenseDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfReconciliationBetweenTaxExpenseAndCorporateTaxRateDetails" roleURI="http://baselmedical.com/role/ScheduleOfReconciliationBetweenTaxExpenseAndCorporateTaxRateDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfReconciliationBetweenTaxExpenseAndCorporateTaxRateDetailsParenthetical" roleURI="http://baselmedical.com/role/ScheduleOfReconciliationBetweenTaxExpenseAndCorporateTaxRateDetailsParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfRightOfUseAssetsDetails" roleURI="http://baselmedical.com/role/ScheduleOfRightOfUseAssetsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfPropertyAndEquipmentDetails" roleURI="http://baselmedical.com/role/ScheduleOfPropertyAndEquipmentDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfInventoriesDetails" roleURI="http://baselmedical.com/role/ScheduleOfInventoriesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfTradeAndOtherReceivablesDetails" roleURI="http://baselmedical.com/role/ScheduleOfTradeAndOtherReceivablesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfMovementInAllowanceForExpectedCreditLossesDetails" roleURI="http://baselmedical.com/role/ScheduleOfMovementInAllowanceForExpectedCreditLossesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#TradeAndOtherReceivablesDetailsNarrative" roleURI="http://baselmedical.com/role/TradeAndOtherReceivablesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfCashAndCashEquivalentsDetails" roleURI="http://baselmedical.com/role/ScheduleOfCashAndCashEquivalentsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfAmountDueFromRelatedPartyDetails" roleURI="http://baselmedical.com/role/ScheduleOfAmountDueFromRelatedPartyDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#AmountDueFromtoRelatedPartiesDetailsNarrative" roleURI="http://baselmedical.com/role/AmountDueFromtoRelatedPartiesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfBorrowingsDetails" roleURI="http://baselmedical.com/role/ScheduleOfBorrowingsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfBreakdownBorrowingsDetails" roleURI="http://baselmedical.com/role/ScheduleOfBreakdownBorrowingsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfDetailsBorrowingsDetails" roleURI="http://baselmedical.com/role/ScheduleOfDetailsBorrowingsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetails" roleURI="http://baselmedical.com/role/ScheduleOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfTradeAndOtherPayablesDetails" roleURI="http://baselmedical.com/role/ScheduleOfTradeAndOtherPayablesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#TradeAndOtherPayablesDetailsNarrative" roleURI="http://baselmedical.com/role/TradeAndOtherPayablesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ShareCapitalDetailsNarrative" roleURI="http://baselmedical.com/role/ShareCapitalDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfAmountsRecognizedInProfitOrLossDetails" roleURI="http://baselmedical.com/role/ScheduleOfAmountsRecognizedInProfitOrLossDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#LeasesDetailsNarrative" roleURI="http://baselmedical.com/role/LeasesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfTransactionsWithRelatedPartiesDetails" roleURI="http://baselmedical.com/role/ScheduleOfTransactionsWithRelatedPartiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfCompensationOfKeyManagementPersonnelDetails" roleURI="http://baselmedical.com/role/ScheduleOfCompensationOfKeyManagementPersonnelDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfFairValueOfIdentifiableAssetsAndLiabilitiesDetails" roleURI="http://baselmedical.com/role/ScheduleOfFairValueOfIdentifiableAssetsAndLiabilitiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfImpairmentTestingCarryingAmountOfGoodwillDetails" roleURI="http://baselmedical.com/role/ScheduleOfImpairmentTestingCarryingAmountOfGoodwillDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfKeyAssumptionsUsedInEstimationOfValueDetails" roleURI="http://baselmedical.com/role/ScheduleOfKeyAssumptionsUsedInEstimationOfValueDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ImpairmentLossOnGoodwillDetailsNarrative" roleURI="http://baselmedical.com/role/ImpairmentLossOnGoodwillDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfShareBasedPaymentReserveDetails" roleURI="http://baselmedical.com/role/ScheduleOfShareBasedPaymentReserveDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ShareBasedPaymentReserveDetailsNarrative" roleURI="http://baselmedical.com/role/ShareBasedPaymentReserveDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" roleURI="http://baselmedical.com/role/ScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfDeferredTaxBalanceDetails" roleURI="http://baselmedical.com/role/ScheduleOfDeferredTaxBalanceDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfGroupsCurrentCreditRiskGradingFrameworkDetails" roleURI="http://baselmedical.com/role/ScheduleOfGroupsCurrentCreditRiskGradingFrameworkDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfFinancialAssetsMinimumExposureToCreditRiskDetails" roleURI="http://baselmedical.com/role/ScheduleOfFinancialAssetsMinimumExposureToCreditRiskDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfCreditRiskDetails" roleURI="http://baselmedical.com/role/ScheduleOfCreditRiskDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfRemainingContractualUndiscountedRepaymentObligationsDetails" roleURI="http://baselmedical.com/role/ScheduleOfRemainingContractualUndiscountedRepaymentObligationsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#FinancialRiskManagementDetailsNarrative" roleURI="http://baselmedical.com/role/FinancialRiskManagementDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfFinancialAssetsMeasuredAtAmortizedCostAndFinancialLiabilitiesAtAmortizedCostDetails" roleURI="http://baselmedical.com/role/ScheduleOfFinancialAssetsMeasuredAtAmortizedCostAndFinancialLiabilitiesAtAmortizedCostDetails" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#ScheduleOfInventoriesDetailsDisclosure" roleURI="http://baselmedical.com/role/ScheduleOfInventoriesDetailsDisclosure" />
    <link:roleRef xlink:type="simple" xlink:href="bmgl-20251231.xsd#EventsOccurringAfterReportingPeriodDetailsNarrative" roleURI="http://baselmedical.com/role/EventsOccurringAfterReportingPeriodDetailsNarrative" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/Cover" xlink:title="00000001 - Document - Cover">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesLineItems" xlink:label="loc_deiEntityAddressesLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesTable" xlink:label="loc_deiEntityAddressesTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressesTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesAddressTypeAxis" xlink:label="loc_deiEntityAddressesAddressTypeAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_deiEntityAddressesTable" xlink:to="loc_deiEntityAddressesAddressTypeAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AddressTypeDomain" xlink:label="loc_deiAddressTypeDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_deiEntityAddressesAddressTypeAxis" xlink:to="loc_deiAddressTypeDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AddressTypeDomain" xlink:label="loc_deiAddressTypeDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_deiEntityAddressesAddressTypeAxis" xlink:to="loc_deiAddressTypeDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_BusinessContactMember" xlink:label="loc_deiBusinessContactMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiAddressTypeDomain" xlink:to="loc_deiBusinessContactMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType" xlink:label="loc_deiDocumentType_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentType_30" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag" xlink:label="loc_deiAmendmentFlag_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiAmendmentFlag_30" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentDescription" xlink:label="loc_deiAmendmentDescription_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiAmendmentDescription_30" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentRegistrationStatement" xlink:label="loc_deiDocumentRegistrationStatement_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentRegistrationStatement_30" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAnnualReport" xlink:label="loc_deiDocumentAnnualReport_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentAnnualReport_30" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentQuarterlyReport" xlink:label="loc_deiDocumentQuarterlyReport_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentQuarterlyReport_30" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentTransitionReport" xlink:label="loc_deiDocumentTransitionReport_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentTransitionReport_30" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentShellCompanyReport" xlink:label="loc_deiDocumentShellCompanyReport_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentShellCompanyReport_30" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentShellCompanyEventDate" xlink:label="loc_deiDocumentShellCompanyEventDate_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentShellCompanyEventDate_30" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodStartDate" xlink:label="loc_deiDocumentPeriodStartDate_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentPeriodStartDate_30" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_deiDocumentPeriodEndDate_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentPeriodEndDate_30" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_deiDocumentFiscalPeriodFocus_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentFiscalPeriodFocus_30" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_deiDocumentFiscalYearFocus_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentFiscalYearFocus_30" xlink:type="arc" order="12" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_deiCurrentFiscalYearEndDate_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiCurrentFiscalYearEndDate_30" xlink:type="arc" order="13" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber" xlink:label="loc_deiEntityFileNumber_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityFileNumber_30" xlink:type="arc" order="14" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName" xlink:label="loc_deiEntityRegistrantName_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityRegistrantName_30" xlink:type="arc" order="15" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey" xlink:label="loc_deiEntityCentralIndexKey_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityCentralIndexKey_30" xlink:type="arc" order="16" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityPrimarySicNumber" xlink:label="loc_deiEntityPrimarySicNumber_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityPrimarySicNumber_30" xlink:type="arc" order="17" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber" xlink:label="loc_deiEntityTaxIdentificationNumber_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityTaxIdentificationNumber_30" xlink:type="arc" order="18" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="loc_deiEntityIncorporationStateCountryCode_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityIncorporationStateCountryCode_30" xlink:type="arc" order="19" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1" xlink:label="loc_deiEntityAddressAddressLine1_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressAddressLine1_30" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2" xlink:label="loc_deiEntityAddressAddressLine2_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressAddressLine2_30" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine3" xlink:label="loc_deiEntityAddressAddressLine3_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressAddressLine3_30" xlink:type="arc" order="22" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown" xlink:label="loc_deiEntityAddressCityOrTown_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressCityOrTown_30" xlink:type="arc" order="23" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince" xlink:label="loc_deiEntityAddressStateOrProvince_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressStateOrProvince_30" xlink:type="arc" order="24" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCountry" xlink:label="loc_deiEntityAddressCountry_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressCountry_30" xlink:type="arc" order="25" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode" xlink:label="loc_deiEntityAddressPostalZipCode_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityAddressPostalZipCode_30" xlink:type="arc" order="26" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CountryRegion" xlink:label="loc_deiCountryRegion_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiCountryRegion_30" xlink:type="arc" order="27" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode" xlink:label="loc_deiCityAreaCode_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiCityAreaCode_30" xlink:type="arc" order="28" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber" xlink:label="loc_deiLocalPhoneNumber_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiLocalPhoneNumber_30" xlink:type="arc" order="29" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Extension" xlink:label="loc_deiExtension_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiExtension_30" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications" xlink:label="loc_deiWrittenCommunications_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiWrittenCommunications_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial" xlink:label="loc_deiSolicitingMaterial_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiSolicitingMaterial_30" xlink:type="arc" order="32" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer" xlink:label="loc_deiPreCommencementTenderOffer_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiPreCommencementTenderOffer_30" xlink:type="arc" order="33" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer" xlink:label="loc_deiPreCommencementIssuerTenderOffer_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiPreCommencementIssuerTenderOffer_30" xlink:type="arc" order="34" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle" xlink:label="loc_deiSecurity12bTitle_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiSecurity12bTitle_30" xlink:type="arc" order="35" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag" xlink:label="loc_deiNoTradingSymbolFlag_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiNoTradingSymbolFlag_30" xlink:type="arc" order="36" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol" xlink:label="loc_deiTradingSymbol_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiTradingSymbol_30" xlink:type="arc" order="37" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName" xlink:label="loc_deiSecurityExchangeName_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiSecurityExchangeName_30" xlink:type="arc" order="38" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12gTitle" xlink:label="loc_deiSecurity12gTitle_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiSecurity12gTitle_30" xlink:type="arc" order="39" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityReportingObligation" xlink:label="loc_deiSecurityReportingObligation_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiSecurityReportingObligation_30" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AnnualInformationForm" xlink:label="loc_deiAnnualInformationForm_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiAnnualInformationForm_30" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditedAnnualFinancialStatements" xlink:label="loc_deiAuditedAnnualFinancialStatements_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiAuditedAnnualFinancialStatements_30" xlink:type="arc" order="42" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_deiEntityWellKnownSeasonedIssuer_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityWellKnownSeasonedIssuer_30" xlink:type="arc" order="43" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_deiEntityVoluntaryFilers_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityVoluntaryFilers_30" xlink:type="arc" order="44" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_deiEntityCurrentReportingStatus_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityCurrentReportingStatus_30" xlink:type="arc" order="45" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInteractiveDataCurrent" xlink:label="loc_deiEntityInteractiveDataCurrent_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityInteractiveDataCurrent_30" xlink:type="arc" order="46" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFilerCategory" xlink:label="loc_deiEntityFilerCategory_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityFilerCategory_30" xlink:type="arc" order="47" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntitySmallBusiness" xlink:label="loc_deiEntitySmallBusiness_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntitySmallBusiness_30" xlink:type="arc" order="48" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_deiEntityEmergingGrowthCompany_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityEmergingGrowthCompany_30" xlink:type="arc" order="49" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityExTransitionPeriod" xlink:label="loc_deiEntityExTransitionPeriod_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityExTransitionPeriod_30" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAccountingStandard" xlink:label="loc_deiDocumentAccountingStandard_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentAccountingStandard_30" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_OtherReportingStandardItemNumber" xlink:label="loc_deiOtherReportingStandardItemNumber_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiOtherReportingStandardItemNumber_30" xlink:type="arc" order="52" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityShellCompany" xlink:label="loc_deiEntityShellCompany_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityShellCompany_30" xlink:type="arc" order="53" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityPublicFloat" xlink:label="loc_deiEntityPublicFloat_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityPublicFloat_30" xlink:type="arc" order="54" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityBankruptcyProceedingsReportingCurrent" xlink:label="loc_deiEntityBankruptcyProceedingsReportingCurrent_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityBankruptcyProceedingsReportingCurrent_30" xlink:type="arc" order="55" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_deiEntityCommonStockSharesOutstanding_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiEntityCommonStockSharesOutstanding_30" xlink:type="arc" order="56" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentsIncorporatedByReferenceTextBlock" xlink:label="loc_deiDocumentsIncorporatedByReferenceTextBlock_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityAddressesLineItems" xlink:to="loc_deiDocumentsIncorporatedByReferenceTextBlock_30" xlink:type="arc" order="57" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/InterimConsolidatedStatementOfProfitOrLossAndComprehensiveIncome" xlink:title="00000002 - Statement - Interim Consolidated Statement of Profit or Loss and Comprehensive Income" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/InterimConsolidatedBalanceSheets" xlink:title="00000003 - Statement - Interim Consolidated Balance Sheets">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="loc_ifrs-fullStatementOfChangesInEquityTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:label="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestatedMember" xlink:label="loc_ifrs-fullRestatedMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="loc_ifrs-fullRestatedMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestatedMember" xlink:label="loc_ifrs-fullRestatedMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="loc_ifrs-fullRestatedMember_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PreviouslyStatedMember" xlink:label="loc_ifrs-fullPreviouslyStatedMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullRestatedMember" xlink:to="loc_ifrs-fullPreviouslyStatedMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RelatedPartiesMember" xlink:label="loc_ifrs-fullRelatedPartiesMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_ifrs-fullRelatedPartiesMember_20" xlink:type="arc" order="22" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ThirdPartyMember" xlink:label="loc_BMGLThirdPartyMember_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLThirdPartyMember_80" xlink:type="arc" order="81" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAbstract" xlink:label="loc_ifrs-fullAssetsAbstract_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAssetsAbstract_110" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssetsAbstract" xlink:label="loc_ifrs-fullNoncurrentAssetsAbstract_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullAssetsAbstract_110" xlink:to="loc_ifrs-fullNoncurrentAssetsAbstract_110" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssets" xlink:label="loc_ifrs-fullRightofuseAssets_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullRightofuseAssets_110" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipment" xlink:label="loc_ifrs-fullPropertyPlantAndEquipment_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullPropertyPlantAndEquipment_110" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentsInSubsidiariesJointVenturesAndAssociates" xlink:label="loc_ifrs-fullInvestmentsInSubsidiariesJointVenturesAndAssociates_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullInvestmentsInSubsidiariesJointVenturesAndAssociates_110" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxAssets" xlink:label="loc_ifrs-fullDeferredTaxAssets_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullDeferredTaxAssets_110" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssets" xlink:label="loc_ifrs-fullNoncurrentAssets_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullNoncurrentAssets_110" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssetsAbstract" xlink:label="loc_ifrs-fullCurrentAssetsAbstract_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullAssetsAbstract_110" xlink:to="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Inventories" xlink:label="loc_ifrs-fullInventories_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullInventories_110" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="loc_ifrs-fullTradeAndOtherCurrentReceivables_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullTradeAndOtherCurrentReceivables_110" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-fullCashAndCashEquivalents_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullCashAndCashEquivalents_110" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentReceivables" xlink:label="loc_ifrs-fullOtherCurrentReceivables_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullOtherCurrentReceivables_110" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredOfferingCost" xlink:label="loc_BMGLDeferredOfferingCost_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:to="loc_BMGLDeferredOfferingCost_110" xlink:type="arc" order="12" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxAssetsCurrent" xlink:label="loc_ifrs-fullCurrentTaxAssetsCurrent_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullCurrentTaxAssetsCurrent_110" xlink:type="arc" order="13" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssets" xlink:label="loc_ifrs-fullCurrentAssets_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentAssetsAbstract_110" xlink:to="loc_ifrs-fullCurrentAssets_110" xlink:type="arc" order="14" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Assets" xlink:label="loc_ifrs-fullAssets_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullAssetsAbstract_110" xlink:to="loc_ifrs-fullAssets_110" xlink:type="arc" order="15" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesAbstract" xlink:label="loc_ifrs-fullLiabilitiesAbstract_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLiabilitiesAbstract_110" xlink:type="arc" order="16" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilitiesAbstract" xlink:label="loc_ifrs-fullNoncurrentLiabilitiesAbstract_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullNoncurrentLiabilitiesAbstract_110" xlink:type="arc" order="17" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="loc_ifrs-fullDeferredTaxLiabilities_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullDeferredTaxLiabilities_110" xlink:type="arc" order="18" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermBorrowings" xlink:label="loc_ifrs-fullLongtermBorrowings_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullLongtermBorrowings_110" xlink:type="arc" order="19" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="loc_ifrs-fullNoncurrentLiabilities_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNoncurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullNoncurrentLiabilities_110" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilitiesAbstract" xlink:label="loc_ifrs-fullCurrentLiabilitiesAbstract_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables" xlink:label="loc_ifrs-fullTradeAndOtherCurrentPayables_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullTradeAndOtherCurrentPayables_110" xlink:type="arc" order="22" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermBorrowings" xlink:label="loc_ifrs-fullShorttermBorrowings_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullShorttermBorrowings_110" xlink:type="arc" order="23" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentFinancialLiabilities" xlink:label="loc_ifrs-fullOtherCurrentFinancialLiabilities_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullOtherCurrentFinancialLiabilities_110" xlink:type="arc" order="24" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AmountDueToFormerDirector" xlink:label="loc_BMGLAmountDueToFormerDirector_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:to="loc_BMGLAmountDueToFormerDirector_110" xlink:type="arc" order="25" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentProvisionsForEmployeeBenefits" xlink:label="loc_ifrs-fullCurrentProvisionsForEmployeeBenefits_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullCurrentProvisionsForEmployeeBenefits_110" xlink:type="arc" order="26" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:label="loc_ifrs-fullCurrentTaxLiabilitiesCurrent_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullCurrentTaxLiabilitiesCurrent_110" xlink:type="arc" order="27" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities" xlink:label="loc_ifrs-fullCurrentLiabilities_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCurrentLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullCurrentLiabilities_110" xlink:type="arc" order="28" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Liabilities" xlink:label="loc_ifrs-fullLiabilities_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullLiabilities_110" xlink:type="arc" order="29" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetAssetsLiabilities" xlink:label="loc_ifrs-fullNetAssetsLiabilities_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullNetAssetsLiabilities_110" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAbstract" xlink:label="loc_ifrs-fullEquityAbstract_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesAbstract_110" xlink:to="loc_ifrs-fullEquityAbstract_110" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapital" xlink:label="loc_ifrs-fullIssuedCapital_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullEquityAbstract_110" xlink:to="loc_ifrs-fullIssuedCapital_110" xlink:type="arc" order="32" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_MergerReserveArisingFromGroupRestructuring" xlink:label="loc_BMGLMergerReserveArisingFromGroupRestructuring_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullEquityAbstract_110" xlink:to="loc_BMGLMergerReserveArisingFromGroupRestructuring_110" xlink:type="arc" order="33" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarnings" xlink:label="loc_ifrs-fullRetainedEarnings_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullEquityAbstract_110" xlink:to="loc_ifrs-fullRetainedEarnings_110" xlink:type="arc" order="34" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherReserves" xlink:label="loc_ifrs-fullOtherReserves_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullEquityAbstract_110" xlink:to="loc_ifrs-fullOtherReserves_110" xlink:type="arc" order="35" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfSharebasedPayments" xlink:label="loc_ifrs-fullReserveOfSharebasedPayments_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullEquityAbstract_110" xlink:to="loc_ifrs-fullReserveOfSharebasedPayments_110" xlink:type="arc" order="36" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterests" xlink:label="loc_ifrs-fullNoncontrollingInterests_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullEquityAbstract_110" xlink:to="loc_ifrs-fullNoncontrollingInterests_110" xlink:type="arc" order="37" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity" xlink:label="loc_ifrs-fullEquity_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullEquityAbstract_110" xlink:to="loc_ifrs-fullEquity_110" xlink:type="arc" order="38" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/InterimConsolidatedStatementOfChangesInShareholdersEquity" xlink:title="00000004 - Statement - Interim Consolidated Statement of Changes in Shareholders&apos; Equity">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="loc_ifrs-fullStatementOfChangesInEquityTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:label="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestatedMember" xlink:label="loc_ifrs-fullRestatedMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="loc_ifrs-fullRestatedMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestatedMember" xlink:label="loc_ifrs-fullRestatedMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="loc_ifrs-fullRestatedMember_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PreviouslyStatedMember" xlink:label="loc_ifrs-fullPreviouslyStatedMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullRestatedMember" xlink:to="loc_ifrs-fullPreviouslyStatedMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="loc_ifrs-fullComponentsOfEquityAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullComponentsOfEquityAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapitalMember" xlink:label="loc_ifrs-fullIssuedCapitalMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullIssuedCapitalMember_0" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MergerReserveMember" xlink:label="loc_ifrs-fullMergerReserveMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullMergerReserveMember_10" xlink:type="arc" order="12" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:label="loc_ifrs-fullReserveOfExchangeDifferencesOnTranslationMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullReserveOfExchangeDifferencesOnTranslationMember_20" xlink:type="arc" order="22" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsMember" xlink:label="loc_ifrs-fullRetainedEarningsMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullRetainedEarningsMember_30" xlink:type="arc" order="32" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:label="loc_ifrs-fullEquityAttributableToOwnersOfParentMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullEquityAttributableToOwnersOfParentMember_40" xlink:type="arc" order="42" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterestsMember" xlink:label="loc_ifrs-fullNoncontrollingInterestsMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullNoncontrollingInterestsMember_50" xlink:type="arc" order="52" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfSharebasedPaymentsMember" xlink:label="loc_ifrs-fullReserveOfSharebasedPaymentsMember_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullReserveOfSharebasedPaymentsMember_100" xlink:type="arc" order="101" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity" xlink:label="loc_ifrs-fullEquity_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullEquity_160" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssueOfEquity" xlink:label="loc_ifrs-fullIssueOfEquity_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIssueOfEquity_160" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:label="loc_ifrs-fullOtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_160" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="loc_ifrs-fullIncreaseDecreaseThroughSharebasedPaymentTransactions_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIncreaseDecreaseThroughSharebasedPaymentTransactions_160" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTax" xlink:label="loc_ifrs-fullOtherComprehensiveIncomeBeforeTax_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherComprehensiveIncomeBeforeTax_160" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTransferToStatutoryReserve" xlink:label="loc_ifrs-fullIncreaseDecreaseThroughTransferToStatutoryReserve_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIncreaseDecreaseThroughTransferToStatutoryReserve_160" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss" xlink:label="loc_ifrs-fullProfitLoss_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullProfitLoss_160" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_NoncontrollingInterestsArisingOnAcquisitionOfSubsidiaries" xlink:label="loc_BMGLNoncontrollingInterestsArisingOnAcquisitionOfSubsidiaries_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLNoncontrollingInterestsArisingOnAcquisitionOfSubsidiaries_160" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncome" xlink:label="loc_ifrs-fullComprehensiveIncome_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullComprehensiveIncome_160" xlink:type="arc" order="10" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/InterimConsolidatedStatementOfCashFlows" xlink:title="00000005 - Statement - Interim Consolidated Statement of Cash Flows" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure" xlink:title="00000006 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cyd/role/MaterialCybersecurityIncidentDisclosure" xlink:title="00000007 - Disclosure - Material Cybersecurity Incident Disclosure" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/General" xlink:title="999008 - Disclosure - General" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/MaterialAccountingPolicyInformation" xlink:title="999009 - Disclosure - Material accounting policy information" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/SignificantAccountingJudgementsAndEstimates" xlink:title="999010 - Disclosure - Significant accounting judgements and estimates" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/Revenue" xlink:title="999011 - Disclosure - Revenue" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/OtherIncome" xlink:title="999012 - Disclosure - Other income" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FinanceCost" xlink:title="999013 - Disclosure - Finance cost" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ProfitlossBeforeTax" xlink:title="999014 - Disclosure - Profit/(Loss) before tax" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/IncomeTaxExpense" xlink:title="999015 - Disclosure - Income tax expense" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/RightOfUseAssets" xlink:title="999016 - Disclosure - Right of use assets" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/PropertyAndEquipment" xlink:title="999017 - Disclosure - Property and equipment" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/Inventories" xlink:title="999018 - Disclosure - Inventories" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/TradeAndOtherReceivables" xlink:title="999019 - Disclosure - Trade and other receivables" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/CashAndCashEquivalents" xlink:title="999020 - Disclosure - Cash and cash equivalents" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/AmountDueFromtoRelatedParties" xlink:title="999021 - Disclosure - Amount due from/to related parties" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/Borrowings" xlink:title="999022 - Disclosure - Borrowings" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/TradeAndOtherPayables" xlink:title="999023 - Disclosure - Trade and other payables" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/AmountDueToFormerDirector" xlink:title="999024 - Disclosure - Amount due to a former director" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ShareCapital" xlink:title="999025 - Disclosure - Share capital" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/Leases" xlink:title="999026 - Disclosure - Leases" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/SignificantRelatedPartyTransactions" xlink:title="999027 - Disclosure - Significant related party transactions" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ImpairmentLossOnGoodwill" xlink:title="999028 - Disclosure - Impairment loss on goodwill" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ShareBasedPaymentReserve" xlink:title="999029 - Disclosure - Share based payment reserve" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/DeferredTaxAssetsAndLiabilities" xlink:title="999030 - Disclosure - Deferred tax assets and liabilities" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FairValueOfAssetsAndLiabilities" xlink:title="999031 - Disclosure - Fair value of assets and liabilities" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FinancialRiskManagement" xlink:title="999032 - Disclosure - Financial risk management" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FinancialInstrumentsByCategory" xlink:title="999033 - Disclosure - Financial instruments by category" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/CapitalManagement" xlink:title="999034 - Disclosure - Capital management" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/EventsOccurringAfterReportingPeriod" xlink:title="999035 - Disclosure - Events occurring after the reporting period" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/MaterialAccountingPolicyInformationPolicies" xlink:title="999036 - Disclosure - Material accounting policy information (Policies)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/GeneralTables" xlink:title="999037 - Disclosure - General (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/MaterialAccountingPolicyInformationTables" xlink:title="999038 - Disclosure - Material accounting policy information (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/RevenueTables" xlink:title="999039 - Disclosure - Revenue (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/OtherIncomeTables" xlink:title="999040 - Disclosure - Other income (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FinanceCostTables" xlink:title="999041 - Disclosure - Finance cost (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ProfitlossBeforeTaxTables" xlink:title="999042 - Disclosure - Profit/(Loss) before tax (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/IncomeTaxExpenseTables" xlink:title="999043 - Disclosure - Income tax expense (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/RightOfUseAssetsTables" xlink:title="999044 - Disclosure - Right of use assets (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/PropertyAndEquipmentTables" xlink:title="999045 - Disclosure - Property and equipment (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/InventoriesTables" xlink:title="999046 - Disclosure - Inventories (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/TradeAndOtherReceivablesTables" xlink:title="999047 - Disclosure - Trade and other receivables (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/CashAndCashEquivalentsTables" xlink:title="999048 - Disclosure - Cash and cash equivalents (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/AmountDueFromtoRelatedPartiesTables" xlink:title="999049 - Disclosure - Amount due from/to related parties (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/BorrowingsTables" xlink:title="999050 - Disclosure - Borrowings (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/TradeAndOtherPayablesTables" xlink:title="999051 - Disclosure - Trade and other payables (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/LeasesTables" xlink:title="999052 - Disclosure - Leases (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/SignificantRelatedPartyTransactionsTables" xlink:title="999053 - Disclosure - Significant related party transactions (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ImpairmentLossOnGoodwillTables" xlink:title="999054 - Disclosure - Impairment loss on goodwill (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ShareBasedPaymentReserveTables" xlink:title="999055 - Disclosure - Share based payment reserve (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/DeferredTaxAssetsAndLiabilitiesTables" xlink:title="999056 - Disclosure - Deferred tax assets and liabilities (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FinancialRiskManagementTables" xlink:title="999057 - Disclosure - Financial risk management (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FinancialInstrumentsByCategoryTables" xlink:title="999058 - Disclosure - Financial instruments by category (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfActivitiesOfSubsidiariesDetails" xlink:title="999059 - Disclosure - Schedule of activities of subsidiaries (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOffsettingOfFinancialAssetsTable" xlink:label="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesAxis" xlink:label="loc_ifrs-fullCounterpartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:to="loc_ifrs-fullCounterpartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BaselMedicalGroupPteLtdMember" xlink:label="loc_BMGLBaselMedicalGroupPteLtdMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBaselMedicalGroupPteLtdMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SingaporeSportsOrthopaedicClinicPteLtdMember" xlink:label="loc_BMGLSingaporeSportsOrthopaedicClinicPteLtdMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSingaporeSportsOrthopaedicClinicPteLtdMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SingaporeSportsOrthopaedicServicesPteLtdMember" xlink:label="loc_BMGLSingaporeSportsOrthopaedicServicesPteLtdMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSingaporeSportsOrthopaedicServicesPteLtdMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOCPteLtdMember" xlink:label="loc_BMGLSSOCPteLtdMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOCPteLtdMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOSPteLtdMember" xlink:label="loc_BMGLSSOSPteLtdMember_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOSPteLtdMember_80" xlink:type="arc" order="81" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SingaporeKneeSportsAndOrthopaedicClinicPteLtdMember" xlink:label="loc_BMGLSingaporeKneeSportsAndOrthopaedicClinicPteLtdMember_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSingaporeKneeSportsAndOrthopaedicClinicPteLtdMember_100" xlink:type="arc" order="101" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SingaporeKneeSportsOrthopaedicServicesPteLtdMember" xlink:label="loc_BMGLSingaporeKneeSportsOrthopaedicServicesPteLtdMember_120" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSingaporeKneeSportsOrthopaedicServicesPteLtdMember_120" xlink:type="arc" order="121" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_PharmaAvenuePteLtdMember" xlink:label="loc_BMGLPharmaAvenuePteLtdMember_140" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLPharmaAvenuePteLtdMember_140" xlink:type="arc" order="141" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BaselMedflowPteLtdMember" xlink:label="loc_BMGLBaselMedflowPteLtdMember_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBaselMedflowPteLtdMember_160" xlink:type="arc" order="161" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalPteLtdMember" xlink:label="loc_BMGLBethesdaMedicalPteLtdMember_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalPteLtdMember_180" xlink:type="arc" order="181" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_OasisMedicalClinicPteLtdMember" xlink:label="loc_BMGLOasisMedicalClinicPteLtdMember_200" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLOasisMedicalClinicPteLtdMember_200" xlink:type="arc" order="201" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOCNovenaPteLtdMember" xlink:label="loc_BMGLSSOCNovenaPteLtdMember_330" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOCNovenaPteLtdMember_330" xlink:type="arc" order="331" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOCOrchardPteLtdMember" xlink:label="loc_BMGLSSOCOrchardPteLtdMember_350" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOCOrchardPteLtdMember_350" xlink:type="arc" order="351" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOCFarrerParkPteLtdMember" xlink:label="loc_BMGLSSOCFarrerParkPteLtdMember_370" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOCFarrerParkPteLtdMember_370" xlink:type="arc" order="371" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CharteredImagingPteLtdMember" xlink:label="loc_BMGLCharteredImagingPteLtdMember_390" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLCharteredImagingPteLtdMember_390" xlink:type="arc" order="391" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NameOfSubsidiary" xlink:label="loc_ifrs-fullNameOfSubsidiary_420" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullNameOfSubsidiary_420" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:label="loc_ifrs-fullDescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_420" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_420" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CountryOfIncorporation" xlink:label="loc_ifrs-fullCountryOfIncorporation_420" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCountryOfIncorporation_420" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:label="loc_ifrs-fullProportionOfOwnershipInterestInSubsidiary_420" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullProportionOfOwnershipInterestInSubsidiary_420" xlink:type="arc" order="3" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/GeneralDetailsNarrative" xlink:title="999060 - Disclosure - General (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="loc_ifrs-fullStatementOfChangesInEquityTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="loc_ifrs-fullComponentsOfEquityAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullComponentsOfEquityAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_OrdinaryShareMember" xlink:label="loc_BMGLOrdinaryShareMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_BMGLOrdinaryShareMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_NumberOfSharesSubscribed" xlink:label="loc_BMGLNumberOfSharesSubscribed_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLNumberOfSharesSubscribed_50" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromIssueOfOrdinaryShares" xlink:label="loc_ifrs-fullProceedsFromIssueOfOrdinaryShares_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullProceedsFromIssueOfOrdinaryShares_50" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ParValuePerShare" xlink:label="loc_ifrs-fullParValuePerShare_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullParValuePerShare_50" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates" xlink:label="loc_ifrs-fullSharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullSharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates_50" xlink:type="arc" order="3" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfExpectedUsefulLivesForPropertyPlantAndEquipmentDetails" xlink:title="999061 - Disclosure - Schedule of expected useful lives for property, plant and equipment (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xlink:label="loc_ifrs-fullDisclosureOfPropertyPlantAndEquipmentTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfPropertyPlantAndEquipmentTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfPropertyPlantAndEquipmentTable" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MachineryMember" xlink:label="loc_ifrs-fullMachineryMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_ifrs-fullMachineryMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FixturesAndFittingsMember" xlink:label="loc_ifrs-fullFixturesAndFittingsMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_ifrs-fullFixturesAndFittingsMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherPropertyPlantAndEquipmentMember" xlink:label="loc_ifrs-fullOtherPropertyPlantAndEquipmentMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_ifrs-fullOtherPropertyPlantAndEquipmentMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_RenovationMember" xlink:label="loc_BMGLRenovationMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLRenovationMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AirConditionerMember" xlink:label="loc_BMGLAirConditionerMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLAirConditionerMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComputerEquipmentMember" xlink:label="loc_ifrs-fullComputerEquipmentMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_ifrs-fullComputerEquipmentMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SoftwareMember" xlink:label="loc_BMGLSoftwareMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLSoftwareMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment" xlink:label="loc_ifrs-fullUsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment_150" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullUsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment_150" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/SignificantAccountingJudgementsAndEstimatesDetailsNarrative" xlink:title="999062 - Disclosure - Significant accounting judgements and estimates (Details Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/SummaryOfRevenueFromTransferOfGoodsAndServicesDetails" xlink:title="999063 - Disclosure - Summary of revenue from transfer of goods and services (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:label="loc_ifrs-fullDisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesAxis" xlink:label="loc_ifrs-fullProductsAndServicesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:to="loc_ifrs-fullProductsAndServicesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesDomain" xlink:label="loc_ifrs-fullProductsAndServicesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullProductsAndServicesAxis" xlink:to="loc_ifrs-fullProductsAndServicesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesDomain" xlink:label="loc_ifrs-fullProductsAndServicesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullProductsAndServicesAxis" xlink:to="loc_ifrs-fullProductsAndServicesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_MedicalServicesMember" xlink:label="loc_BMGLMedicalServicesMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullProductsAndServicesDomain" xlink:to="loc_BMGLMedicalServicesMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TimingOfTransferOfGoodsOrServicesAxis" xlink:label="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:to="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TimingOfTransferOfGoodsOrServicesDomain" xlink:label="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesAxis" xlink:to="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TimingOfTransferOfGoodsOrServicesDomain" xlink:label="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesAxis" xlink:to="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GoodsOrServicesTransferredAtPointInTimeMember" xlink:label="loc_ifrs-fullGoodsOrServicesTransferredAtPointInTimeMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullTimingOfTransferOfGoodsOrServicesDomain" xlink:to="loc_ifrs-fullGoodsOrServicesTransferredAtPointInTimeMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue" xlink:label="loc_ifrs-fullRevenue_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullRevenue_130" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfOtherIncomeDetails" xlink:title="999064 - Disclosure - Schedule of Other income (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfFinanceCostDetails" xlink:title="999065 - Disclosure - Schedule of Finance cost (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfProfitBeforeTaxDetails" xlink:title="999066 - Disclosure - Schedule of Profit before tax (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfComponentOfIncomeTaxExpenseDetails" xlink:title="999067 - Disclosure - Schedule of component of income tax expense (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfReconciliationBetweenTaxExpenseAndCorporateTaxRateDetails" xlink:title="999068 - Disclosure - Schedule of reconciliation between tax expense and corporate tax rate (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfReconciliationBetweenTaxExpenseAndCorporateTaxRateDetailsParenthetical" xlink:title="999069 - Disclosure - Schedule of reconciliation between tax expense and corporate tax rate (Details) (Parenthetical)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfRightOfUseAssetsDetails" xlink:title="999070 - Disclosure - Schedule of Right of use assets (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable" xlink:label="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:label="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" xlink:to="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="loc_ifrs-fullCarryingAmountMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:to="loc_ifrs-fullCarryingAmountMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="loc_ifrs-fullCarryingAmountMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:to="loc_ifrs-fullCarryingAmountMember_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember" xlink:label="loc_ifrs-fullGrossCarryingAmountMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCarryingAmountMember" xlink:to="loc_ifrs-fullGrossCarryingAmountMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AccumulatedDepreciationMember" xlink:label="loc_BMGLAccumulatedDepreciationMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCarryingAmountMember" xlink:to="loc_BMGLAccumulatedDepreciationMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssets" xlink:label="loc_ifrs-fullRightofuseAssets_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullRightofuseAssets_180" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsRightofuseAssets" xlink:label="loc_ifrs-fullAdditionsOtherThanThroughBusinessCombinationsRightofuseAssets_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAdditionsOtherThanThroughBusinessCombinationsRightofuseAssets_180" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationRightofuseAssets" xlink:label="loc_ifrs-fullDepreciationRightofuseAssets_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDepreciationRightofuseAssets_180" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitionsThroughBusinessCombinationsRightofuseAssets" xlink:label="loc_ifrs-fullAcquisitionsThroughBusinessCombinationsRightofuseAssets_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAcquisitionsThroughBusinessCombinationsRightofuseAssets_180" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_WrittenOffRightofuseAssets" xlink:label="loc_BMGLWrittenOffRightofuseAssets_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLWrittenOffRightofuseAssets_180" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserve" xlink:label="loc_BMGLFairValueReserve_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueReserve_180" xlink:type="arc" order="5" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfPropertyAndEquipmentDetails" xlink:title="999071 - Disclosure - Schedule of Property and equipment (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable" xlink:label="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:label="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" xlink:to="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="loc_ifrs-fullCarryingAmountMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:to="loc_ifrs-fullCarryingAmountMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="loc_ifrs-fullCarryingAmountMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:to="loc_ifrs-fullCarryingAmountMember_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember" xlink:label="loc_ifrs-fullGrossCarryingAmountMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCarryingAmountMember" xlink:to="loc_ifrs-fullGrossCarryingAmountMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedDepreciationAndAmortisationMember" xlink:label="loc_ifrs-fullAccumulatedDepreciationAndAmortisationMember_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCarryingAmountMember" xlink:to="loc_ifrs-fullAccumulatedDepreciationAndAmortisationMember_320" xlink:type="arc" order="321" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MachineryMember" xlink:label="loc_ifrs-fullMachineryMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_ifrs-fullMachineryMember_0" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FixturesAndFittingsMember" xlink:label="loc_ifrs-fullFixturesAndFittingsMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_ifrs-fullFixturesAndFittingsMember_10" xlink:type="arc" order="12" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_MedicalEquipmentMember" xlink:label="loc_BMGLMedicalEquipmentMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLMedicalEquipmentMember_20" xlink:type="arc" order="22" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_RenovationMember" xlink:label="loc_BMGLRenovationMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLRenovationMember_30" xlink:type="arc" order="32" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AirConditionerMember" xlink:label="loc_BMGLAirConditionerMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLAirConditionerMember_40" xlink:type="arc" order="42" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ComputerAndOfficeEquipmentMember" xlink:label="loc_BMGLComputerAndOfficeEquipmentMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLComputerAndOfficeEquipmentMember_50" xlink:type="arc" order="52" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SoftwareMember" xlink:label="loc_BMGLSoftwareMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_BMGLSoftwareMember_60" xlink:type="arc" order="62" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:label="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfReconciliationOfChangesInGoodwillTable" xlink:to="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestatedMember" xlink:label="loc_ifrs-fullRestatedMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="loc_ifrs-fullRestatedMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestatedMember" xlink:label="loc_ifrs-fullRestatedMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullRetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="loc_ifrs-fullRestatedMember_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PreviouslyStatedMember" xlink:label="loc_ifrs-fullPreviouslyStatedMember_960" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullRestatedMember" xlink:to="loc_ifrs-fullPreviouslyStatedMember_960" xlink:type="arc" order="961" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipment" xlink:label="loc_ifrs-fullPropertyPlantAndEquipment_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullPropertyPlantAndEquipment_1450" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment" xlink:label="loc_ifrs-fullAdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_1450" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment" xlink:label="loc_ifrs-fullAcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment_1450" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_WrittenOffOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment" xlink:label="loc_BMGLWrittenOffOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLWrittenOffOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_1450" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_PropertyPlantAndEquipmentFairValueReserve" xlink:label="loc_BMGLPropertyPlantAndEquipmentFairValueReserve_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLPropertyPlantAndEquipmentFairValueReserve_1450" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationPropertyPlantAndEquipment" xlink:label="loc_ifrs-fullDepreciationPropertyPlantAndEquipment_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDepreciationPropertyPlantAndEquipment_1450" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment" xlink:label="loc_ifrs-fullIncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment_1450" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_PropertyPlantAndEquipmentAccumulatedDepreciation" xlink:label="loc_BMGLPropertyPlantAndEquipmentAccumulatedDepreciation_1450" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLPropertyPlantAndEquipmentAccumulatedDepreciation_1450" xlink:type="arc" order="8" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfInventoriesDetails" xlink:title="999072 - Disclosure - Schedule of Inventories (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfTradeAndOtherReceivablesDetails" xlink:title="999073 - Disclosure - Schedule of trade and other receivables (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ThridPartiesMember" xlink:label="loc_BMGLThridPartiesMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLThridPartiesMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTradeReceivables" xlink:label="loc_ifrs-fullCurrentTradeReceivables_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCurrentTradeReceivables_70" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AllowanceForExpectedCreditLosses" xlink:label="loc_BMGLAllowanceForExpectedCreditLosses_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLAllowanceForExpectedCreditLosses_70" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeReceivables" xlink:label="loc_ifrs-fullTradeReceivables_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeReceivables_70" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermDeposits" xlink:label="loc_ifrs-fullLongtermDeposits_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLongtermDeposits_70" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Prepayments" xlink:label="loc_ifrs-fullPrepayments_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullPrepayments_70" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentReceivables" xlink:label="loc_ifrs-fullOtherCurrentReceivables_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherCurrentReceivables_70" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="loc_ifrs-fullTradeAndOtherCurrentReceivables_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherCurrentReceivables_70" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AllowanceForExpectedCreditLoss" xlink:label="loc_BMGLAllowanceForExpectedCreditLoss_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLAllowanceForExpectedCreditLoss_70" xlink:type="arc" order="8" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfMovementInAllowanceForExpectedCreditLossesDetails" xlink:title="999074 - Disclosure - Schedule of movement in allowance for expected credit losses (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/TradeAndOtherReceivablesDetailsNarrative" xlink:title="999075 - Disclosure - Trade and other receivables (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CustodianServicesMember" xlink:label="loc_BMGLCustodianServicesMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLCustodianServicesMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermDeposits" xlink:label="loc_ifrs-fullLongtermDeposits_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLongtermDeposits_20" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfCashAndCashEquivalentsDetails" xlink:title="999076 - Disclosure - Schedule of cash and cash equivalents (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfAmountDueFromRelatedPartyDetails" xlink:title="999077 - Disclosure - Schedule of amount due from related party (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DirectorsMember" xlink:label="loc_BMGLDirectorsMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLDirectorsMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_OthersRelatedPartiesMember" xlink:label="loc_BMGLOthersRelatedPartiesMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLOthersRelatedPartiesMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ShareholderMember" xlink:label="loc_BMGLShareholderMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLShareholderMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RelatedPartiesMember" xlink:label="loc_ifrs-fullRelatedPartiesMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_ifrs-fullRelatedPartiesMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivablesDueFromRelatedParties" xlink:label="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_100" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayablesToRelatedParties" xlink:label="loc_ifrs-fullTradeAndOtherCurrentPayablesToRelatedParties_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherCurrentPayablesToRelatedParties_100" xlink:type="arc" order="1" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/AmountDueFromtoRelatedPartiesDetailsNarrative" xlink:title="999078 - Disclosure - Amount due from/to related parties (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_RainforestCapitalVCCMember" xlink:label="loc_BMGLRainforestCapitalVCCMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLRainforestCapitalVCCMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DrKevinYipAndSingmedInvestmentPteLtdMember" xlink:label="loc_BMGLDrKevinYipAndSingmedInvestmentPteLtdMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLDrKevinYipAndSingmedInvestmentPteLtdMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DrKevinYipMember" xlink:label="loc_BMGLDrKevinYipMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLDrKevinYipMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementPeriodAdjustmentsRecognisedForParticularAssetsLiabilitiesNoncontrollingInterestsOrItemsOfConsideration" xlink:label="loc_ifrs-fullMeasurementPeriodAdjustmentsRecognisedForParticularAssetsLiabilitiesNoncontrollingInterestsOrItemsOfConsideration_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullMeasurementPeriodAdjustmentsRecognisedForParticularAssetsLiabilitiesNoncontrollingInterestsOrItemsOfConsideration_170" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SettlementOfLiabilitiesByEntityOnBehalfOfRelatedPartyRelatedPartyTransactions" xlink:label="loc_ifrs-fullSettlementOfLiabilitiesByEntityOnBehalfOfRelatedPartyRelatedPartyTransactions_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullSettlementOfLiabilitiesByEntityOnBehalfOfRelatedPartyRelatedPartyTransactions_170" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CashPaidOnClosingInitialSettlement" xlink:label="loc_BMGLCashPaidOnClosingInitialSettlement_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLCashPaidOnClosingInitialSettlement_170" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_PercentageOfProvisionalConsiderationAmountForTransferOfShare" xlink:label="loc_BMGLPercentageOfProvisionalConsiderationAmountForTransferOfShare_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLPercentageOfProvisionalConsiderationAmountForTransferOfShare_170" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LoansAndAdvances" xlink:label="loc_ifrs-fullLoansAndAdvances_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLoansAndAdvances_170" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WagesAndSalaries" xlink:label="loc_ifrs-fullWagesAndSalaries_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullWagesAndSalaries_170" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherPayables" xlink:label="loc_ifrs-fullOtherPayables_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherPayables_170" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AmountsReceivableRelatedPartyTransactions" xlink:label="loc_ifrs-fullAmountsReceivableRelatedPartyTransactions_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAmountsReceivableRelatedPartyTransactions_170" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashRepaymentsOfAdvancesAndLoansFromRelatedParties" xlink:label="loc_ifrs-fullCashRepaymentsOfAdvancesAndLoansFromRelatedParties_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCashRepaymentsOfAdvancesAndLoansFromRelatedParties_170" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReceivablesDueFromAssociates" xlink:label="loc_ifrs-fullReceivablesDueFromAssociates_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullReceivablesDueFromAssociates_170" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CashReceivedToFullySettleRelatedPartyReceivables" xlink:label="loc_BMGLCashReceivedToFullySettleRelatedPartyReceivables_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLCashReceivedToFullySettleRelatedPartyReceivables_170" xlink:type="arc" order="10" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfBorrowingsDetails" xlink:title="999079 - Disclosure - Schedule of borrowings (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfBreakdownBorrowingsDetails" xlink:title="999080 - Disclosure - Schedule of breakdown borrowings (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="loc_ifrs-fullDisclosureOfFinancialInstrumentsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfFinancialInstrumentsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:label="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfFinancialInstrumentsTable" xlink:to="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:label="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" xlink:to="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:label="loc_ifrs-fullClassesOfFinancialInstrumentsDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" xlink:to="loc_ifrs-fullClassesOfFinancialInstrumentsDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanOneMember" xlink:label="loc_BMGLTermLoanOneMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanOneMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTwoMember" xlink:label="loc_BMGLTermLoanTwoMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTwoMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanThreeMember" xlink:label="loc_BMGLTermLoanThreeMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanThreeMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanFourMember" xlink:label="loc_BMGLTermLoanFourMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanFourMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanSixMember" xlink:label="loc_BMGLTermLoanSixMember_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanSixMember_80" xlink:type="arc" order="81" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanSevenMember" xlink:label="loc_BMGLTermLoanSevenMember_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanSevenMember_100" xlink:type="arc" order="101" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanNineMember" xlink:label="loc_BMGLTermLoanNineMember_120" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanNineMember_120" xlink:type="arc" order="121" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTenMember" xlink:label="loc_BMGLTermLoanTenMember_140" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTenMember_140" xlink:type="arc" order="141" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanElevenMember" xlink:label="loc_BMGLTermLoanElevenMember_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanElevenMember_160" xlink:type="arc" order="161" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTwelveMember" xlink:label="loc_BMGLTermLoanTwelveMember_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTwelveMember_180" xlink:type="arc" order="181" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanMember" xlink:label="loc_BMGLTermLoanMember_200" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanMember_200" xlink:type="arc" order="201" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LoansReceived" xlink:label="loc_ifrs-fullLoansReceived_260" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLoansReceived_260" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfDetailsBorrowingsDetails" xlink:title="999081 - Disclosure - Schedule of details borrowings (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="loc_ifrs-fullDisclosureOfFinancialInstrumentsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfFinancialInstrumentsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:label="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfFinancialInstrumentsTable" xlink:to="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:label="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" xlink:to="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:label="loc_ifrs-fullClassesOfFinancialInstrumentsDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsAxis" xlink:to="loc_ifrs-fullClassesOfFinancialInstrumentsDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanOneMember" xlink:label="loc_BMGLTermLoanOneMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanOneMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTwoMember" xlink:label="loc_BMGLTermLoanTwoMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTwoMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanThreeMember" xlink:label="loc_BMGLTermLoanThreeMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanThreeMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanFourMember" xlink:label="loc_BMGLTermLoanFourMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanFourMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanSixMember" xlink:label="loc_BMGLTermLoanSixMember_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanSixMember_80" xlink:type="arc" order="81" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanSevenMember" xlink:label="loc_BMGLTermLoanSevenMember_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanSevenMember_100" xlink:type="arc" order="101" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanNineMember" xlink:label="loc_BMGLTermLoanNineMember_120" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanNineMember_120" xlink:type="arc" order="121" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTenMember" xlink:label="loc_BMGLTermLoanTenMember_140" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTenMember_140" xlink:type="arc" order="141" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTenOneMember" xlink:label="loc_BMGLTermLoanTenOneMember_160" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTenOneMember_160" xlink:type="arc" order="161" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTenTwoMember" xlink:label="loc_BMGLTermLoanTenTwoMember_180" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTenTwoMember_180" xlink:type="arc" order="181" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTenThreeMember" xlink:label="loc_BMGLTermLoanTenThreeMember_200" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTenThreeMember_200" xlink:type="arc" order="201" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTenFourMember" xlink:label="loc_BMGLTermLoanTenFourMember_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTenFourMember_220" xlink:type="arc" order="221" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanElevenMember" xlink:label="loc_BMGLTermLoanElevenMember_240" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanElevenMember_240" xlink:type="arc" order="241" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanElevenOneMember" xlink:label="loc_BMGLTermLoanElevenOneMember_260" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanElevenOneMember_260" xlink:type="arc" order="261" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanTwelveMember" xlink:label="loc_BMGLTermLoanTwelveMember_280" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanTwelveMember_280" xlink:type="arc" order="281" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TermLoanThirteenMember" xlink:label="loc_BMGLTermLoanThirteenMember_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfFinancialInstrumentsDomain" xlink:to="loc_BMGLTermLoanThirteenMember_320" xlink:type="arc" order="321" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings" xlink:label="loc_ifrs-fullBorrowings_350" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullBorrowings_350" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsInterestRate" xlink:label="loc_ifrs-fullBorrowingsInterestRate_350" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullBorrowingsInterestRate_350" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsMaturity" xlink:label="loc_ifrs-fullBorrowingsMaturity_350" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullBorrowingsMaturity_350" xlink:type="arc" order="2" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetails" xlink:title="999082 - Disclosure - Schedule of reconciliation of liabilities arising from financing activities (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable" xlink:label="loc_ifrs-fullDisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:label="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable" xlink:to="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain" xlink:label="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesAxis" xlink:to="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain" xlink:label="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesAxis" xlink:to="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BankOverdraftMember" xlink:label="loc_BMGLBankOverdraftMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain" xlink:to="loc_BMGLBankOverdraftMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilitiesMember" xlink:label="loc_ifrs-fullLeaseLiabilitiesMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain" xlink:to="loc_ifrs-fullLeaseLiabilitiesMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserveMember" xlink:label="loc_BMGLFairValueReserveMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain" xlink:to="loc_BMGLFairValueReserveMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermBorrowingsMember" xlink:label="loc_ifrs-fullShorttermBorrowingsMember_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain" xlink:to="loc_ifrs-fullShorttermBorrowingsMember_70" xlink:type="arc" order="71" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsHeldToHedgeLiabilitiesArisingFromFinancingActivitiesMember" xlink:label="loc_ifrs-fullAssetsHeldToHedgeLiabilitiesArisingFromFinancingActivitiesMember_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullLiabilitiesArisingFromFinancingActivitiesDomain" xlink:to="loc_ifrs-fullAssetsHeldToHedgeLiabilitiesArisingFromFinancingActivitiesMember_100" xlink:type="arc" order="101" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivities" xlink:label="loc_ifrs-fullLiabilitiesArisingFromFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLiabilitiesArisingFromFinancingActivities_320" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities" xlink:label="loc_ifrs-fullIncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities_320" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:label="loc_ifrs-fullProceedsFromBorrowingsClassifiedAsFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullProceedsFromBorrowingsClassifiedAsFinancingActivities_320" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IncreaseThroughNewLeasesLiabilitiesAndBankBorrowingsArisingFromFinancingActivities" xlink:label="loc_BMGLIncreaseThroughNewLeasesLiabilitiesAndBankBorrowingsArisingFromFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLIncreaseThroughNewLeasesLiabilitiesAndBankBorrowingsArisingFromFinancingActivities_320" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseCurrentAndNonCurrent" xlink:label="loc_BMGLIncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseCurrentAndNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLIncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseCurrentAndNonCurrent_320" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities" xlink:label="loc_ifrs-fullIncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities_320" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IncreaseThroughFairValueOfLiabilitiesAndBankBorrowingsArisingFromFinancingActivities" xlink:label="loc_BMGLIncreaseThroughFairValueOfLiabilitiesAndBankBorrowingsArisingFromFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLIncreaseThroughFairValueOfLiabilitiesAndBankBorrowingsArisingFromFinancingActivities_320" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLeaseLiabilities" xlink:label="loc_ifrs-fullCurrentLeaseLiabilities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCurrentLeaseLiabilities_320" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" xlink:label="loc_ifrs-fullCashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings_320" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromCurrentBorrowings" xlink:label="loc_ifrs-fullProceedsFromCurrentBorrowings_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullProceedsFromCurrentBorrowings_320" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseThroughNewLeasesLiabilitiesArisingFromFinancingActivities" xlink:label="loc_ifrs-fullIncreaseThroughNewLeasesLiabilitiesArisingFromFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIncreaseThroughNewLeasesLiabilitiesArisingFromFinancingActivities_320" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseCurrent" xlink:label="loc_BMGLIncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLIncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseCurrent_320" xlink:type="arc" order="12" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_OtherLeaseLiabilitiesAndBankBorrowingsArisingFromFinancingActivitiesCurrent" xlink:label="loc_BMGLOtherLeaseLiabilitiesAndBankBorrowingsArisingFromFinancingActivitiesCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLOtherLeaseLiabilitiesAndBankBorrowingsArisingFromFinancingActivitiesCurrent_320" xlink:type="arc" order="13" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities" xlink:label="loc_ifrs-fullNoncurrentLeaseLiabilities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullNoncurrentLeaseLiabilities_320" xlink:type="arc" order="15" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CashFlowsFromUsedInIncreaseDecreaseInNonCurrentBorrowings" xlink:label="loc_BMGLCashFlowsFromUsedInIncreaseDecreaseInNonCurrentBorrowings_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLCashFlowsFromUsedInIncreaseDecreaseInNonCurrentBorrowings_320" xlink:type="arc" order="16" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:label="loc_ifrs-fullProceedsFromNoncurrentBorrowings_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullProceedsFromNoncurrentBorrowings_320" xlink:type="arc" order="17" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IncreaseThroughNewLeasesLiabilitiesArisingNonCurrentFromFinancingActivities" xlink:label="loc_BMGLIncreaseThroughNewLeasesLiabilitiesArisingNonCurrentFromFinancingActivities_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLIncreaseThroughNewLeasesLiabilitiesArisingNonCurrentFromFinancingActivities_320" xlink:type="arc" order="18" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseNonCurrent" xlink:label="loc_BMGLIncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLIncreaseDecreaseInLeaseLiabilitiesInterestAndBankBorrowingsExpenseNonCurrent_320" xlink:type="arc" order="19" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_OtherLeaseLiabilitiesAndBankBorrowingsArisingFromFinancingActivitiesNonCurrent" xlink:label="loc_BMGLOtherLeaseLiabilitiesAndBankBorrowingsArisingFromFinancingActivitiesNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLOtherLeaseLiabilitiesAndBankBorrowingsArisingFromFinancingActivitiesNonCurrent_320" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BankBorrowings" xlink:label="loc_BMGLBankBorrowings_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLBankBorrowings_320" xlink:type="arc" order="22" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AdditionBankBorrowingsCurrent" xlink:label="loc_BMGLAdditionBankBorrowingsCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLAdditionBankBorrowingsCurrent_320" xlink:type="arc" order="23" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueOfBankBorrowingsCurrent" xlink:label="loc_BMGLFairValueOfBankBorrowingsCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueOfBankBorrowingsCurrent_320" xlink:type="arc" order="24" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentPortionOfNoncurrentSecuredBankLoansReceived" xlink:label="loc_ifrs-fullNoncurrentPortionOfNoncurrentSecuredBankLoansReceived_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullNoncurrentPortionOfNoncurrentSecuredBankLoansReceived_320" xlink:type="arc" order="26" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AdditionBankBorrowingsNonCurrent" xlink:label="loc_BMGLAdditionBankBorrowingsNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLAdditionBankBorrowingsNonCurrent_320" xlink:type="arc" order="27" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueOfBankBorrowingsNonCurrent" xlink:label="loc_BMGLFairValueOfBankBorrowingsNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueOfBankBorrowingsNonCurrent_320" xlink:type="arc" order="28" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueOfAdditionBankBorrowingsCurrent" xlink:label="loc_BMGLFairValueOfAdditionBankBorrowingsCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueOfAdditionBankBorrowingsCurrent_320" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueOfAdditionBankBorrowingsNonCurrent" xlink:label="loc_BMGLFairValueOfAdditionBankBorrowingsNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueOfAdditionBankBorrowingsNonCurrent_320" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:label="loc_ifrs-fullBankOverdraftsClassifiedAsCashEquivalents_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullBankOverdraftsClassifiedAsCashEquivalents_320" xlink:type="arc" order="32" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CashFlowsBankOverdrafts" xlink:label="loc_BMGLCashFlowsBankOverdrafts_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLCashFlowsBankOverdrafts_320" xlink:type="arc" order="33" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ProceedsFromBankBorrowingsBankOverdraft" xlink:label="loc_BMGLProceedsFromBankBorrowingsBankOverdraft_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLProceedsFromBankBorrowingsBankOverdraft_320" xlink:type="arc" order="34" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_NonCashChangesAdditionInBankOverdraft" xlink:label="loc_BMGLNonCashChangesAdditionInBankOverdraft_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLNonCashChangesAdditionInBankOverdraft_320" xlink:type="arc" order="35" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpenseOnBankLoansAndOverdrafts" xlink:label="loc_ifrs-fullInterestExpenseOnBankLoansAndOverdrafts_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullInterestExpenseOnBankLoansAndOverdrafts_320" xlink:type="arc" order="36" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_NoncashChangesOtherBankOverdraft" xlink:label="loc_BMGLNoncashChangesOtherBankOverdraft_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLNoncashChangesOtherBankOverdraft_320" xlink:type="arc" order="37" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserveBankOverdraft" xlink:label="loc_BMGLFairValueReserveBankOverdraft_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueReserveBankOverdraft_320" xlink:type="arc" order="38" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserveLeaseLiabilitiesCurrent" xlink:label="loc_BMGLFairValueReserveLeaseLiabilitiesCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueReserveLeaseLiabilitiesCurrent_320" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserveLeaseLiabilitiesNonCurrent" xlink:label="loc_BMGLFairValueReserveLeaseLiabilitiesNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueReserveLeaseLiabilitiesNonCurrent_320" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserveBankBorrowingsCurrent" xlink:label="loc_BMGLFairValueReserveBankBorrowingsCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueReserveBankBorrowingsCurrent_320" xlink:type="arc" order="42" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserveBankBorrowingsNonCurrent" xlink:label="loc_BMGLFairValueReserveBankBorrowingsNonCurrent_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueReserveBankBorrowingsNonCurrent_320" xlink:type="arc" order="43" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueReserveLiabilitiesBorrowings" xlink:label="loc_BMGLFairValueReserveLiabilitiesBorrowings_320" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueReserveLiabilitiesBorrowings_320" xlink:type="arc" order="44" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfTradeAndOtherPayablesDetails" xlink:title="999083 - Disclosure - Schedule of trade and other payables (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/TradeAndOtherPayablesDetailsNarrative" xlink:title="999084 - Disclosure - Trade and other payables (Details Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ShareCapitalDetailsNarrative" xlink:title="999085 - Disclosure - Share capital (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="loc_ifrs-fullStatementOfChangesInEquityTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="loc_ifrs-fullComponentsOfEquityAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullComponentsOfEquityAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_InitialPublicOfferingMember" xlink:label="loc_BMGLInitialPublicOfferingMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_BMGLInitialPublicOfferingMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_OverAllotmentOptionsMember" xlink:label="loc_BMGLOverAllotmentOptionsMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_BMGLOverAllotmentOptionsMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesAuthorised" xlink:label="loc_ifrs-fullNumberOfSharesAuthorised_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullNumberOfSharesAuthorised_60" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ValueOfSharesAuthorised" xlink:label="loc_BMGLValueOfSharesAuthorised_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLValueOfSharesAuthorised_60" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ParValuePerShare" xlink:label="loc_ifrs-fullParValuePerShare_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullParValuePerShare_60" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesIssued" xlink:label="loc_ifrs-fullNumberOfSharesIssued_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullNumberOfSharesIssued_60" xlink:type="arc" order="3" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfAmountsRecognizedInProfitOrLossDetails" xlink:title="999086 - Disclosure - Schedule of amounts recognized in profit or loss (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/LeasesDetailsNarrative" xlink:title="999087 - Disclosure - Leases (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xlink:label="loc_ifrs-fullDisclosureOfPropertyPlantAndEquipmentTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfPropertyPlantAndEquipmentTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfPropertyPlantAndEquipmentTable" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentAxis" xlink:to="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MachineryMember" xlink:label="loc_ifrs-fullMachineryMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullClassesOfPropertyPlantAndEquipmentDomain" xlink:to="loc_ifrs-fullMachineryMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_LeaseTermOfContract" xlink:label="loc_BMGLLeaseTermOfContract_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLLeaseTermOfContract_80" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageLesseesIncrementalBorrowingRateAppliedToLeaseLiabilitiesRecognisedAtDateOfInitialApplicationOfIFRS16" xlink:label="loc_ifrs-fullWeightedAverageLesseesIncrementalBorrowingRateAppliedToLeaseLiabilitiesRecognisedAtDateOfInitialApplicationOfIFRS16_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullWeightedAverageLesseesIncrementalBorrowingRateAppliedToLeaseLiabilitiesRecognisedAtDateOfInitialApplicationOfIFRS16_80" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_WeightedAverageRemainingLifeOfLease" xlink:label="loc_BMGLWeightedAverageRemainingLifeOfLease_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLWeightedAverageRemainingLifeOfLease_80" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashOutflowForLeases" xlink:label="loc_ifrs-fullCashOutflowForLeases_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCashOutflowForLeases_80" xlink:type="arc" order="3" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfTransactionsWithRelatedPartiesDetails" xlink:title="999088 - Disclosure - Schedule of transactions with related parties (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RelatedPartiesMember" xlink:label="loc_ifrs-fullRelatedPartiesMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_ifrs-fullRelatedPartiesMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_InterestIncomeOnLoansAndReceivable" xlink:label="loc_BMGLInterestIncomeOnLoansAndReceivable_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLInterestIncomeOnLoansAndReceivable_50" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ManagementFee" xlink:label="loc_BMGLManagementFee_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLManagementFee_50" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashRepaymentsOfAdvancesAndLoansFromRelatedParties" xlink:label="loc_ifrs-fullCashRepaymentsOfAdvancesAndLoansFromRelatedParties_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCashRepaymentsOfAdvancesAndLoansFromRelatedParties_50" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_InvestmentFundsOwedToSubsidiary" xlink:label="loc_BMGLInvestmentFundsOwedToSubsidiary_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLInvestmentFundsOwedToSubsidiary_50" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_InvestmentFundsOwedFromShareholders" xlink:label="loc_BMGLInvestmentFundsOwedFromShareholders_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLInvestmentFundsOwedFromShareholders_50" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepaymentsOfCurrentBorrowings" xlink:label="loc_ifrs-fullRepaymentsOfCurrentBorrowings_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullRepaymentsOfCurrentBorrowings_50" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_PaymentsOnBehalfOfRelatedCompanies" xlink:label="loc_BMGLPaymentsOnBehalfOfRelatedCompanies_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLPaymentsOnBehalfOfRelatedCompanies_50" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_OtherConsultancyServicesToRelatedCompanies" xlink:label="loc_BMGLOtherConsultancyServicesToRelatedCompanies_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLOtherConsultancyServicesToRelatedCompanies_50" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_RechargeOfOperatingExpensesToRelatedCompanies" xlink:label="loc_BMGLRechargeOfOperatingExpensesToRelatedCompanies_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLRechargeOfOperatingExpensesToRelatedCompanies_50" xlink:type="arc" order="8" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfCompensationOfKeyManagementPersonnelDetails" xlink:title="999089 - Disclosure - Schedule of compensation of key management personnel (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfFairValueOfIdentifiableAssetsAndLiabilitiesDetails" xlink:title="999090 - Disclosure - Schedule of fair value of identifiable assets and liabilities (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfImpairmentTestingCarryingAmountOfGoodwillDetails" xlink:title="999091 - Disclosure - Schedule of impairment testing carrying amount of goodwill (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOffsettingOfFinancialAssetsTable" xlink:label="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesAxis" xlink:label="loc_ifrs-fullCounterpartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:to="loc_ifrs-fullCounterpartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalClinicSuntecMember" xlink:label="loc_BMGLBethesdaMedicalClinicSuntecMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalClinicSuntecMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalClinicGrantralMallMacphersonMember" xlink:label="loc_BMGLBethesdaMedicalClinicGrantralMallMacphersonMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalClinicGrantralMallMacphersonMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalClinicToaPayohMember" xlink:label="loc_BMGLBethesdaMedicalClinicToaPayohMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalClinicToaPayohMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalClinicBeachRoadMember" xlink:label="loc_BMGLBethesdaMedicalClinicBeachRoadMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalClinicBeachRoadMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalClinicMargaretDriveMember" xlink:label="loc_BMGLBethesdaMedicalClinicMargaretDriveMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalClinicMargaretDriveMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalClinicTampinesMember" xlink:label="loc_BMGLBethesdaMedicalClinicTampinesMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalClinicTampinesMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Goodwill" xlink:label="loc_ifrs-fullGoodwill_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullGoodwill_80" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfKeyAssumptionsUsedInEstimationOfValueDetails" xlink:title="999092 - Disclosure - Schedule of key assumptions used in the estimation of value (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ImpairmentLossOnGoodwillDetailsNarrative" xlink:title="999093 - Disclosure - Impairment loss on goodwill (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOffsettingOfFinancialAssetsTable" xlink:label="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesAxis" xlink:label="loc_ifrs-fullCounterpartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:to="loc_ifrs-fullCounterpartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BethesdaMedicalPteLtdMember" xlink:label="loc_BMGLBethesdaMedicalPteLtdMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLBethesdaMedicalPteLtdMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred" xlink:label="loc_ifrs-fullAcquisitiondateFairValueOfTotalConsiderationTransferred_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAcquisitiondateFairValueOfTotalConsiderationTransferred_40" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueOfAcquiree" xlink:label="loc_ifrs-fullRevenueOfAcquiree_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullRevenueOfAcquiree_40" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossOfAcquiree" xlink:label="loc_ifrs-fullProfitLossOfAcquiree_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullProfitLossOfAcquiree_40" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashTransferred" xlink:label="loc_ifrs-fullCashTransferred_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCashTransferred_40" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherTangibleOrIntangibleAssetsTransferred" xlink:label="loc_ifrs-fullOtherTangibleOrIntangibleAssetsTransferred_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherTangibleOrIntangibleAssetsTransferred_40" xlink:type="arc" order="4" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfShareBasedPaymentReserveDetails" xlink:title="999094 - Disclosure - Schedule of share based payment reserve (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ShareBasedPaymentReserveDetailsNarrative" xlink:title="999095 - Disclosure - Share based payment reserve (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="loc_ifrs-fullStatementOfChangesInEquityTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="loc_ifrs-fullComponentsOfEquityAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullComponentsOfEquityAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="loc_ifrs-fullComponentsOfEquityDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullComponentsOfEquityAxis" xlink:to="loc_ifrs-fullComponentsOfEquityDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfSharebasedPaymentsMember" xlink:label="loc_ifrs-fullReserveOfSharebasedPaymentsMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullComponentsOfEquityDomain" xlink:to="loc_ifrs-fullReserveOfSharebasedPaymentsMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullStatementOfChangesInEquityTable" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesAxis" xlink:to="loc_ifrs-fullCategoriesOfRelatedPartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_EmployeeMember" xlink:label="loc_BMGLEmployeeMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfRelatedPartiesDomain" xlink:to="loc_BMGLEmployeeMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfSharebasedPayments" xlink:label="loc_ifrs-fullReserveOfSharebasedPayments_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullReserveOfSharebasedPayments_70" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="loc_ifrs-fullIncreaseDecreaseThroughSharebasedPaymentTransactions_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullIncreaseDecreaseThroughSharebasedPaymentTransactions_70" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ReserveOfSharebasedPaymentsShares" xlink:label="loc_BMGLReserveOfSharebasedPaymentsShares_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLReserveOfSharebasedPaymentsShares_70" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:label="loc_ifrs-fullExpenseFromSharebasedPaymentTransactionsWithEmployees_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullExpenseFromSharebasedPaymentTransactionsWithEmployees_70" xlink:type="arc" order="3" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:title="999096 - Disclosure - Schedule of deferred tax assets and liabilities (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfDeferredTaxBalanceDetails" xlink:title="999097 - Disclosure - Schedule of deferred tax balance (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsTable" xlink:label="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-fullBusinessCombinationsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" xlink:to="loc_ifrs-fullBusinessCombinationsAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain" xlink:label="loc_ifrs-fullBusinessCombinationsDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullBusinessCombinationsAxis" xlink:to="loc_ifrs-fullBusinessCombinationsDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain" xlink:label="loc_ifrs-fullBusinessCombinationsDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullBusinessCombinationsAxis" xlink:to="loc_ifrs-fullBusinessCombinationsDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_RecognizedInProfitLossMember" xlink:label="loc_BMGLRecognizedInProfitLossMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullBusinessCombinationsDomain" xlink:to="loc_BMGLRecognizedInProfitLossMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AcquiredInBusinessCombinationsMember" xlink:label="loc_BMGLAcquiredInBusinessCombinationsMember_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullBusinessCombinationsDomain" xlink:to="loc_BMGLAcquiredInBusinessCombinationsMember_70" xlink:type="arc" order="71" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxPropertyPlantAndEquipment" xlink:label="loc_BMGLDeferredTaxPropertyPlantAndEquipment_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxPropertyPlantAndEquipment_90" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxROUAssets" xlink:label="loc_BMGLDeferredTaxROUAssets_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxROUAssets_90" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxInventory" xlink:label="loc_BMGLDeferredTaxInventory_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxInventory_90" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxTradeReceivables" xlink:label="loc_BMGLDeferredTaxTradeReceivables_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxTradeReceivables_90" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxOtherPayables" xlink:label="loc_BMGLDeferredTaxOtherPayables_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxOtherPayables_90" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxLeaseLiabilities" xlink:label="loc_BMGLDeferredTaxLeaseLiabilities_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxLeaseLiabilities_90" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxOthers" xlink:label="loc_BMGLDeferredTaxOthers_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxOthers_90" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DeferredTaxAssetsLiabilities" xlink:label="loc_BMGLDeferredTaxAssetsLiabilities_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDeferredTaxAssetsLiabilities_90" xlink:type="arc" order="7" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfGroupsCurrentCreditRiskGradingFrameworkDetails" xlink:title="999098 - Disclosure - Schedule of group&#8217;s current credit risk grading framework (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementTable" xlink:label="loc_BMGLIfrsStatementTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLIfrsStatementTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryAxis" xlink:label="loc_BMGLCategoryAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_BMGLIfrsStatementTable" xlink:to="loc_BMGLCategoryAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryDomain" xlink:label="loc_BMGLCategoryDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_BMGLCategoryAxis" xlink:to="loc_BMGLCategoryDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryDomain" xlink:label="loc_BMGLCategoryDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_BMGLCategoryAxis" xlink:to="loc_BMGLCategoryDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryOneMember" xlink:label="loc_BMGLCategoryOneMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLCategoryDomain" xlink:to="loc_BMGLCategoryOneMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryTwoMember" xlink:label="loc_BMGLCategoryTwoMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLCategoryDomain" xlink:to="loc_BMGLCategoryTwoMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryThreeMember" xlink:label="loc_BMGLCategoryThreeMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLCategoryDomain" xlink:to="loc_BMGLCategoryThreeMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryFourMember" xlink:label="loc_BMGLCategoryFourMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLCategoryDomain" xlink:to="loc_BMGLCategoryFourMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_DescriptionOfCreditRisk" xlink:label="loc_BMGLDescriptionOfCreditRisk_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLDescriptionOfCreditRisk_90" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BasisForRecognizingExpectedCreditLoss" xlink:label="loc_BMGLBasisForRecognizingExpectedCreditLoss_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLBasisForRecognizingExpectedCreditLoss_90" xlink:type="arc" order="1" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfFinancialAssetsMinimumExposureToCreditRiskDetails" xlink:title="999099 - Disclosure - Schedule of financial assets, minimum exposure to credit risk (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsTable" xlink:label="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis" xlink:label="loc_ifrs-fullBusinessCombinationsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" xlink:to="loc_ifrs-fullBusinessCombinationsAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain" xlink:label="loc_ifrs-fullBusinessCombinationsDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullBusinessCombinationsAxis" xlink:to="loc_ifrs-fullBusinessCombinationsDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain" xlink:label="loc_ifrs-fullBusinessCombinationsDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullBusinessCombinationsAxis" xlink:to="loc_ifrs-fullBusinessCombinationsDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember" xlink:label="loc_ifrs-fullGrossCarryingAmountMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullBusinessCombinationsDomain" xlink:to="loc_ifrs-fullGrossCarryingAmountMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AllowanceForCreditLossesMember" xlink:label="loc_ifrs-fullAllowanceForCreditLossesMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullBusinessCombinationsDomain" xlink:to="loc_ifrs-fullAllowanceForCreditLossesMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="loc_ifrs-fullCarryingAmountMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullBusinessCombinationsDomain" xlink:to="loc_ifrs-fullCarryingAmountMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryAxis" xlink:label="loc_BMGLCategoryAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" xlink:to="loc_BMGLCategoryAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryDomain" xlink:label="loc_BMGLCategoryDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_BMGLCategoryAxis" xlink:to="loc_BMGLCategoryDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryDomain" xlink:label="loc_BMGLCategoryDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_BMGLCategoryAxis" xlink:to="loc_BMGLCategoryDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CategoryOneMember" xlink:label="loc_BMGLCategoryOneMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLCategoryDomain" xlink:to="loc_BMGLCategoryOneMember_0" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="loc_ifrs-fullTypesOfRisksAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfBusinessCombinationsTable" xlink:to="loc_ifrs-fullTypesOfRisksAxis" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain" xlink:label="loc_ifrs-fullTypesOfRisksDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullTypesOfRisksAxis" xlink:to="loc_ifrs-fullTypesOfRisksDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain" xlink:label="loc_ifrs-fullTypesOfRisksDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullTypesOfRisksAxis" xlink:to="loc_ifrs-fullTypesOfRisksDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_LifeTimeExpectedCreditLossMember" xlink:label="loc_BMGLLifeTimeExpectedCreditLossMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullTypesOfRisksDomain" xlink:to="loc_BMGLLifeTimeExpectedCreditLossMember_0" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TwelveExpectedCreditLossMember" xlink:label="loc_BMGLTwelveExpectedCreditLossMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullTypesOfRisksDomain" xlink:to="loc_BMGLTwelveExpectedCreditLossMember_30" xlink:type="arc" order="33" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CreditRiskTradeReceivables" xlink:label="loc_BMGLCreditRiskTradeReceivables_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLCreditRiskTradeReceivables_220" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentReceivables" xlink:label="loc_ifrs-fullOtherNoncurrentReceivables_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherNoncurrentReceivables_220" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermDeposits" xlink:label="loc_ifrs-fullLongtermDeposits_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLongtermDeposits_220" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ExpectedCreditLosses" xlink:label="loc_BMGLExpectedCreditLosses_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLExpectedCreditLosses_220" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_LongtermDeposit" xlink:label="loc_BMGLLongtermDeposit_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLLongtermDeposit_220" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivablesDueFromRelatedParties" xlink:label="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_220" xlink:type="arc" order="5" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfCreditRiskDetails" xlink:title="999100 - Disclosure - Schedule of credit risk (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfProvisionMatrixTable" xlink:label="loc_ifrs-fullDisclosureOfProvisionMatrixTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfProvisionMatrixTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastDueStatusAxis" xlink:label="loc_ifrs-fullPastDueStatusAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfProvisionMatrixTable" xlink:to="loc_ifrs-fullPastDueStatusAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastDueStatusDomain" xlink:label="loc_ifrs-fullPastDueStatusDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullPastDueStatusAxis" xlink:to="loc_ifrs-fullPastDueStatusDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastDueStatusDomain" xlink:label="loc_ifrs-fullPastDueStatusDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullPastDueStatusAxis" xlink:to="loc_ifrs-fullPastDueStatusDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_NotPastDueMember" xlink:label="loc_BMGLNotPastDueMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullPastDueStatusDomain" xlink:to="loc_BMGLNotPastDueMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:label="loc_ifrs-fullLaterThanOneMonthAndNotLaterThanTwoMonthsMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullPastDueStatusDomain" xlink:to="loc_ifrs-fullLaterThanOneMonthAndNotLaterThanTwoMonthsMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_LaterThanTwoMonthsAndNotLaterThanFourMonthsMember" xlink:label="loc_BMGLLaterThanTwoMonthsAndNotLaterThanFourMonthsMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullPastDueStatusDomain" xlink:to="loc_BMGLLaterThanTwoMonthsAndNotLaterThanFourMonthsMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanFourMonthsMember" xlink:label="loc_ifrs-fullLaterThanFourMonthsMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullPastDueStatusDomain" xlink:to="loc_ifrs-fullLaterThanFourMonthsMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneYearMember" xlink:label="loc_ifrs-fullLaterThanOneYearMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullPastDueStatusDomain" xlink:to="loc_ifrs-fullLaterThanOneYearMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="loc_ifrs-fullTypesOfRisksAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfProvisionMatrixTable" xlink:to="loc_ifrs-fullTypesOfRisksAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain" xlink:label="loc_ifrs-fullTypesOfRisksDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullTypesOfRisksAxis" xlink:to="loc_ifrs-fullTypesOfRisksDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain" xlink:label="loc_ifrs-fullTypesOfRisksDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullTypesOfRisksAxis" xlink:to="loc_ifrs-fullTypesOfRisksDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CreditRiskMember" xlink:label="loc_ifrs-fullCreditRiskMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullTypesOfRisksDomain" xlink:to="loc_ifrs-fullCreditRiskMember_0" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpectedCreditLossRate" xlink:label="loc_ifrs-fullExpectedCreditLossRate_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullExpectedCreditLossRate_220" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeReceivables" xlink:label="loc_ifrs-fullTradeReceivables_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeReceivables_220" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ExpectedCreditLosses" xlink:label="loc_BMGLExpectedCreditLosses_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLExpectedCreditLosses_220" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherReceivables" xlink:label="loc_ifrs-fullOtherReceivables_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherReceivables_220" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CreditRiskTradeReceivables" xlink:label="loc_BMGLCreditRiskTradeReceivables_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLCreditRiskTradeReceivables_220" xlink:type="arc" order="4" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfRemainingContractualUndiscountedRepaymentObligationsDetails" xlink:title="999101 - Disclosure - Schedule of remaining contractual undiscounted repayment obligations (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAmountsToBeRecoveredOrSettledAfterTwelveMonthsForClassesOfAssetsAndLiabilitiesThatContainAmountsToBeRecoveredOrSettledBothNoMoreAndMoreThanTwelveMonthsAfterReportingDateTable" xlink:label="loc_ifrs-fullDisclosureOfAmountsToBeRecoveredOrSettledAfterTwelveMonthsForClassesOfAssetsAndLiabilitiesThatContainAmountsToBeRecoveredOrSettledBothNoMoreAndMoreThanTwelveMonthsAfterReportingDateTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfAmountsToBeRecoveredOrSettledAfterTwelveMonthsForClassesOfAssetsAndLiabilitiesThatContainAmountsToBeRecoveredOrSettledBothNoMoreAndMoreThanTwelveMonthsAfterReportingDateTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityAxis" xlink:label="loc_ifrs-fullMaturityAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfAmountsToBeRecoveredOrSettledAfterTwelveMonthsForClassesOfAssetsAndLiabilitiesThatContainAmountsToBeRecoveredOrSettledBothNoMoreAndMoreThanTwelveMonthsAfterReportingDateTable" xlink:to="loc_ifrs-fullMaturityAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain" xlink:label="loc_ifrs-fullMaturityDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullMaturityAxis" xlink:to="loc_ifrs-fullMaturityDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain" xlink:label="loc_ifrs-fullMaturityDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullMaturityAxis" xlink:to="loc_ifrs-fullMaturityDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="loc_ifrs-fullCarryingAmountMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullMaturityDomain" xlink:to="loc_ifrs-fullCarryingAmountMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ContractualCashFlowsMember" xlink:label="loc_BMGLContractualCashFlowsMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullMaturityDomain" xlink:to="loc_BMGLContractualCashFlowsMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanOneYearMember" xlink:label="loc_ifrs-fullNotLaterThanOneYearMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullMaturityDomain" xlink:to="loc_ifrs-fullNotLaterThanOneYearMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneYearMember" xlink:label="loc_ifrs-fullLaterThanOneYearMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullMaturityDomain" xlink:to="loc_ifrs-fullLaterThanOneYearMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="loc_ifrs-fullTradeAndOtherCurrentReceivables_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherCurrentReceivables_130" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-fullCashAndCashEquivalents_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCashAndCashEquivalents_130" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivablesDueFromRelatedParties" xlink:label="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_130" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TotalUndiscountedFinancialAssets" xlink:label="loc_BMGLTotalUndiscountedFinancialAssets_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLTotalUndiscountedFinancialAssets_130" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherPayables" xlink:label="loc_ifrs-fullTradeAndOtherPayables_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherPayables_130" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilities" xlink:label="loc_ifrs-fullLeaseLiabilities_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLeaseLiabilities_130" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayablesToRelatedParties" xlink:label="loc_ifrs-fullTradeAndOtherCurrentPayablesToRelatedParties_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherCurrentPayablesToRelatedParties_130" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AmountDueToFormerDirector" xlink:label="loc_BMGLAmountDueToFormerDirector_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLAmountDueToFormerDirector_130" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings" xlink:label="loc_ifrs-fullBorrowings_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullBorrowings_130" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_Borrowing" xlink:label="loc_BMGLBorrowing_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLBorrowing_130" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilitiesUndiscountedCashFlows" xlink:label="loc_ifrs-fullDerivativeFinancialLiabilitiesUndiscountedCashFlows_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDerivativeFinancialLiabilitiesUndiscountedCashFlows_130" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TotalNetUndiscountedFinancialAssetsliabilities" xlink:label="loc_BMGLTotalNetUndiscountedFinancialAssetsliabilities_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLTotalNetUndiscountedFinancialAssetsliabilities_130" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AmountDueToRelatedParties" xlink:label="loc_BMGLAmountDueToRelatedParties_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLAmountDueToRelatedParties_130" xlink:type="arc" order="12" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReceivablesDueFromAssociates" xlink:label="loc_ifrs-fullReceivablesDueFromAssociates_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullReceivablesDueFromAssociates_130" xlink:type="arc" order="13" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/FinancialRiskManagementDetailsNarrative" xlink:title="999102 - Disclosure - Financial risk management (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:label="loc_ifrs-fullDisclosureOfDetailedInformationAboutBorrowingsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfDetailedInformationAboutBorrowingsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis" xlink:label="loc_ifrs-fullRangeAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfDetailedInformationAboutBorrowingsTable" xlink:to="loc_ifrs-fullRangeAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain" xlink:label="loc_ifrs-fullRangeDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullRangeAxis" xlink:to="loc_ifrs-fullRangeDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain" xlink:label="loc_ifrs-fullRangeDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullRangeAxis" xlink:to="loc_ifrs-fullRangeDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember" xlink:label="loc_ifrs-fullTopOfRangeMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullRangeDomain" xlink:to="loc_ifrs-fullTopOfRangeMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember" xlink:label="loc_ifrs-fullBottomOfRangeMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullRangeDomain" xlink:to="loc_ifrs-fullBottomOfRangeMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_PercentageOfTradeReceivables" xlink:label="loc_BMGLPercentageOfTradeReceivables_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLPercentageOfTradeReceivables_50" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfFinancialAssetsMeasuredAtAmortizedCostAndFinancialLiabilitiesAtAmortizedCostDetails" xlink:title="999103 - Disclosure - Schedule of financial assets measured at amortized cost and financial liabilities at amortized cost (Details)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsTable" xlink:label="loc_ifrs-fullDisclosureOfFinancialAssetsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfFinancialAssetsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsAxis" xlink:label="loc_ifrs-fullCategoriesOfFinancialAssetsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfFinancialAssetsTable" xlink:to="loc_ifrs-fullCategoriesOfFinancialAssetsAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:label="loc_ifrs-fullCategoriesOfFinancialAssetsDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCategoriesOfFinancialAssetsAxis" xlink:to="loc_ifrs-fullCategoriesOfFinancialAssetsDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:label="loc_ifrs-fullCategoriesOfFinancialAssetsDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCategoriesOfFinancialAssetsAxis" xlink:to="loc_ifrs-fullCategoriesOfFinancialAssetsDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember" xlink:label="loc_ifrs-fullFinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCategoriesOfFinancialAssetsDomain" xlink:to="loc_ifrs-fullFinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="loc_ifrs-fullTradeAndOtherCurrentReceivables_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherCurrentReceivables_40" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-fullCashAndCashEquivalents_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCashAndCashEquivalents_40" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivablesDueFromRelatedParties" xlink:label="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherReceivablesDueFromRelatedParties_40" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_TotalUndiscountedFinancialAssets" xlink:label="loc_BMGLTotalUndiscountedFinancialAssets_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLTotalUndiscountedFinancialAssets_40" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherPayables" xlink:label="loc_ifrs-fullTradeAndOtherPayables_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherPayables_40" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayablesToRelatedParties" xlink:label="loc_ifrs-fullTradeAndOtherCurrentPayablesToRelatedParties_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullTradeAndOtherCurrentPayablesToRelatedParties_40" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AmountDueToFormerDirector" xlink:label="loc_BMGLAmountDueToFormerDirector_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLAmountDueToFormerDirector_40" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherBorrowings" xlink:label="loc_ifrs-fullOtherBorrowings_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullOtherBorrowings_40" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilitiesUndiscountedCashFlows" xlink:label="loc_ifrs-fullDerivativeFinancialLiabilitiesUndiscountedCashFlows_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDerivativeFinancialLiabilitiesUndiscountedCashFlows_40" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentInvestments" xlink:label="loc_ifrs-fullCurrentInvestments_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCurrentInvestments_40" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReceivablesDueFromAssociates" xlink:label="loc_ifrs-fullReceivablesDueFromAssociates_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullReceivablesDueFromAssociates_40" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings" xlink:label="loc_ifrs-fullBorrowings_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullBorrowings_40" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentProvisionsForEmployeeBenefits" xlink:label="loc_ifrs-fullCurrentProvisionsForEmployeeBenefits_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullCurrentProvisionsForEmployeeBenefits_40" xlink:type="arc" order="12" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/ScheduleOfInventoriesDetailsDisclosure" xlink:title="999104 - Disclosure - Schedule of inventories (Details)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://baselmedical.com/role/EventsOccurringAfterReportingPeriodDetailsNarrative" xlink:title="999105 - Disclosure - Events occurring after the reporting period (Details Narrative)">
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_IfrsStatementLineItems" xlink:label="loc_BMGLIfrsStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOffsettingOfFinancialAssetsTable" xlink:label="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesAxis" xlink:label="loc_ifrs-fullCounterpartiesAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:to="loc_ifrs-fullCounterpartiesAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="loc_ifrs-fullCounterpartiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullCounterpartiesAxis" xlink:to="loc_ifrs-fullCounterpartiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOCNovenaPteLtdMember" xlink:label="loc_BMGLSSOCNovenaPteLtdMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOCNovenaPteLtdMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOCOrchardPteLtdMember" xlink:label="loc_BMGLSSOCOrchardPteLtdMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOCOrchardPteLtdMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_SSOCFarrerParkPteLtdMember" xlink:label="loc_BMGLSSOCFarrerParkPteLtdMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLSSOCFarrerParkPteLtdMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_PharmaAvenuePteLtdMember" xlink:label="loc_BMGLPharmaAvenuePteLtdMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLPharmaAvenuePteLtdMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_CharteredImagingPteLtdMember" xlink:label="loc_BMGLCharteredImagingPteLtdMember_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLCharteredImagingPteLtdMember_70" xlink:type="arc" order="71" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_LuckyPetServicePteLtdMember" xlink:label="loc_BMGLLuckyPetServicePteLtdMember_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLLuckyPetServicePteLtdMember_90" xlink:type="arc" order="91" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_AtlasMedicalConceiergePteLtdMember" xlink:label="loc_BMGLAtlasMedicalConceiergePteLtdMember_110" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullCounterpartiesDomain" xlink:to="loc_BMGLAtlasMedicalConceiergePteLtdMember_110" xlink:type="arc" order="111" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis" xlink:label="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:to="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodAxis" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:label="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodAxis" xlink:to="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:label="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodAxis" xlink:to="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_NonadjustingEventsAfterReportingPeriodMember" xlink:label="loc_BMGLNonadjustingEventsAfterReportingPeriodMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullNonadjustingEventsAfterReportingPeriodDomain" xlink:to="loc_BMGLNonadjustingEventsAfterReportingPeriodMember_0" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis" xlink:label="loc_ifrs-fullRangeAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-fullDisclosureOfOffsettingOfFinancialAssetsTable" xlink:to="loc_ifrs-fullRangeAxis" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain" xlink:label="loc_ifrs-fullRangeDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-fullRangeAxis" xlink:to="loc_ifrs-fullRangeDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain" xlink:label="loc_ifrs-fullRangeDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_ifrs-fullRangeAxis" xlink:to="loc_ifrs-fullRangeDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember" xlink:label="loc_ifrs-fullTopOfRangeMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-fullRangeDomain" xlink:to="loc_ifrs-fullTopOfRangeMember_60" xlink:type="arc" order="62" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_InvestmentsPercentage" xlink:label="loc_BMGLInvestmentsPercentage_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLInvestmentsPercentage_170" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_InvestmentsSalePercentage" xlink:label="loc_BMGLInvestmentsSalePercentage_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLInvestmentsSalePercentage_170" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_InvestmentsHoldPercentage" xlink:label="loc_BMGLInvestmentsHoldPercentage_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLInvestmentsHoldPercentage_170" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesIssued" xlink:label="loc_ifrs-fullNumberOfSharesIssued_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullNumberOfSharesIssued_170" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetDebt" xlink:label="loc_ifrs-fullNetDebt_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullNetDebt_170" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_BorrowingsOfDeferredConsideration" xlink:label="loc_BMGLBorrowingsOfDeferredConsideration_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLBorrowingsOfDeferredConsideration_170" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_ConsiderationOfAcquisition" xlink:label="loc_BMGLConsiderationOfAcquisition_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLConsiderationOfAcquisition_170" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssets" xlink:label="loc_ifrs-fullRightofuseAssets_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullRightofuseAssets_170" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="bmgl-20251231.xsd#BMGL_FairValueOfRightofuseAssets" xlink:label="loc_BMGLFairValueOfRightofuseAssets_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_BMGLFairValueOfRightofuseAssets_170" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsToRightofuseAssets" xlink:label="loc_ifrs-fullAdditionsToRightofuseAssets_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullAdditionsToRightofuseAssets_170" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LoansReceived" xlink:label="loc_ifrs-fullLoansReceived_170" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_BMGLIfrsStatementLineItems" xlink:to="loc_ifrs-fullLoansReceived_170" xlink:type="arc" order="10" />
    </link:definitionLink>
</link:linkbase>
