issuing banknoun [ C ]
ukusBANKING, FINANCEa bank or other financial organization that makes credit cards available:
Keep a record of card numbers so you can contact the issuing bank easily in case of theft.
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issuer
a bank that makes available letters of credit (= documents promising to pay for goods when they are delivered):
The program backed hundreds of billions of dollars in debt in the event of payment default by an issuing bank.
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advising bank