1
[ noun ] a flat rectangular paper container for papers

Used in print

(John Cheever, "The Brigadier and the Golf Widow,"...)

But the Blevins were away ; their maid gave him an envelope with a check in it and shut the door .

(Marvin Schiller, "The Sheep's in the Meadow,"...)

I lived to see an envelope of hers in the morning mail and to lock myself in my room in the afternoon to reread her letter for the tenth time and finally prepare an answer .

Related terms

container window_envelope

2
[ noun ] any wrapper or covering

Related terms

wrapping

3
[ noun ] the maximum operating capability of a system

Examples

"test pilots try to push the envelope"

Related terms

operating_capability

4
[ noun ] a natural covering (as by a fluid)

Examples

"the spacecraft detected an envelope of gas around the comet"

Related terms

covering

5
[ noun ] a curve that is tangent to each of a family of curves

Related terms

curve

6
[ noun ] the bag containing the gas in a balloon

Synonyms

gasbag

Related terms

bag balloon

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