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1. Dictionary

   En·vel·ope

   /ˈenvəˌlōp/

   

   noun

   • 1. a flat paper container with a sealable flap, used to enclose a letter or document.
   • 2. a covering or containing structure or layer: "the external envelope of the swimming pool"
   • ▪ the outer metal or glass housing of a vacuum tube, electric light, etc.: "the switch itself is a glass envelope filled with rare gases and containing two contacts"
   • ▪ the structure within a balloon or nonrigid airship containing the gas.
   • ▪ a membrane forming the outer layer of certain viruses.
   • ▪ a curve joining the successive peaks of a modulated wave.
   • ▪ a curve or surface tangent to each of a family of curves or surfaces.
   • ▪ the nebulous covering of the head of a comet; coma.

   Word Origin mid 16th century (in the sense ‘wrapper, enveloping layer’; originally as envelope): from French enveloppe, from envelopper ‘envelop’. The sense ‘covering of a letter’ dates from the early 18th century.

   Scrabble Points: 13

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2. www.merriam-webster.com › dictionary › envelopeEnvelope Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › envelope

   • Cached

   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

3. dictionary.cambridge.org › dictionary › englishENVELOPE | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

   • Cached

   a flat, usually square or rectangular, paper container for a letter: a brown / manila envelope. a sealed envelope. a flat, usually square or rectangular, plastic container used for keeping papers in: The papers were handed to me in a transparent plastic envelope. push the envelope.

4. www.dictionary.com › browse › envelopeENVELOPE Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › envelope

   • Cached

   noun. a flat covering of paper, usually rectangular in shape and with a flap that can be folded over and sealed, used to enclose a letter, etc. any covering or wrapper. biology any enclosing structure, such as a membrane, shell, or skin. the bag enclosing the gas in a balloon.

5. www.vocabulary.com › dictionary › envelopeEnvelope - Definition, Meaning & Synonyms - Vocabulary.com

   www.vocabulary.com › dictionary › envelope

   An envelope is something that envelops, or wraps around. It usually refers to the thing you stick a stamp on and snail mail.

6. www.thefreedictionary.com › envelopeEnvelope - definition of envelope by The Free Dictionary

   www.thefreedictionary.com › envelope

   • Cached

   en·ve·lope. (ĕn′və-lōp′, ŏn′-) n. 1. A flat paper container, especially for a letter, usually having a gummed flap. 2. Something that envelops; a wrapping. 3. Biology An enclosing structure or cover, such as a membrane or the outer coat of a virus. 4. The bag containing the gas in a balloon or airship. 5.

7. www.collinsdictionary.com › dictionary › englishENVELOPE definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

   • Cached

   noun. 1. a flat covering of paper, usually rectangular in shape and with a flap that can be folded over and sealed, used to enclose a letter, etc. 2. any covering or wrapper. 3. biology. any enclosing structure, such as a membrane, shell, or skin. 4. the bag enclosing the gas in a balloon.

8. www.oxfordlearnersdictionaries.com › definition › englishenvelope noun - Definition, pictures, pronunciation and usage...

   www.oxfordlearnersdictionaries.com › definition › english

   • Cached

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

9. www.collinsdictionary.com › us › dictionaryENVELOPE - All you need to know about it | Collins English ...

   www.collinsdictionary.com › us › dictionary

   • Cached

   Definitions of 'envelope' 1. An envelope is the rectangular paper cover in which you send a letter to someone through the mail. [...] 2. See push the envelope [...] More. Image. © rangizzz, Shutterstock. Synonyms of 'envelope' • wrapping, casing, case, covering [...] More. Collocations with the word 'envelope'

10. www.yourdictionary.com › envelopeEnvelope Definition & Meaning - YourDictionary

    www.yourdictionary.com › envelope

    • Cached

    Envelope definition: A flat paper container, especially for a letter, usually having a gummed flap.

11. dictionary.cambridge.org › dictionary › learner-englishMeaning of envelope – Learner’s Dictionary - Cambridge Dictionary

    dictionary.cambridge.org › dictionary › learner-english

    • Cached

    ENVELOPE definition: a flat paper container for a letter. Learn more.