Synonyms of envelope


1. envelope, container

usage: a flat (usually rectangular) container for a letter, thin package, etc.

2. envelope, wrapping, wrap, wrapper

usage: any wrapper or covering

3. envelope, curve, curved shape

usage: a curve that is tangent to each of a family of curves

4. envelope, covering, natural covering, cover

usage: a natural covering (as by a fluid); "the spacecraft detected an envelope of gas around the comet"

5. envelope, operating capability, performance capability

usage: the maximum operating capability of a system (especially an aircraft); "test pilots try to push the envelope"

6. envelope, gasbag, bag

usage: the bag containing the gas in a balloon

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