Antonyms of envelope from BoostVocab

envelope

/'ɛnvə,loʊp/

noun
the bag containing the gas in a balloon
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Similar:

gasbag

type of:
bag

part of:
balloon
noun
a curve that is tangent to each of a family of curves
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type of:
curve curved shape
noun
a flat (usually rectangular) container for a letter, thin package, etc.
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type of:
container
noun
a natural covering (as by a fluid)
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"the spacecraft detected an envelope of gas around the comet"

type of:
cover natural covering covering
noun
any wrapper or covering
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type of:
wrapping wrap wrapper
noun
the maximum operating capability of a system (especially an aircraft)
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"test pilots try to push the envelope"

type of:
operating capability performance capability

Antonyms of envelope

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