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English definition of “self-addressed stamped envelope”

self-addressed stamped envelope

noun [C]     ( abbreviation SASE) US COMMUNICATIONS
an envelope that you send someone with your name and address and a stamp on it, so that they can send you something in the mail : To receive a poster , send a self-addressed stamped envelope to the above address .
(Definition of self-addressed stamped envelope noun from the Cambridge Business English Dictionary © Cambridge University Press)
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