From Longman Dictionary of Contemporary Englishfinancial institutionfiˌnancial instiˈtution noun [countable] technical BFBa business organization that lends and borrows money, for example a bank All the big financial institutions cut their interest rates today.From Longman Business Dictionaryfinancial institutionfiˈnancial instiˌtution [countable]FINANCEBANKING an organization such as a bank where people, companies, or governments put their money, which it invests to produce a profitThere was some buying of shares by investment funds and financial institutions. → institution