Envelope Front of an envelope mailed in the U.S. in 1906, with a postage stamp and address Back of the above envelope, showing an additional receiving post office postmark An envelope is a common …

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The meaning of ENVELOPE is a flat usually paper container (as for a letter). How to use envelope in a sentence. How do you pronounce envelope?: Usage Guide.

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Definition of envelope noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

ENVELOPE definition: 1. a flat, usually square or rectangular, paper container for a letter 2. a flat, usually square or…. Learn more.

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USPS shows you how to send a letter or postcard in the U.S., from choosing an envelope, writing the address, buying and applying stamps, and finding a drop-off location.