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envelope

Sentences

Meaning

1. A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.
2. Something that envelops; a wrapping.
3. A bag containing the lifting gas of a balloon or airship; fabric that encloses the gas-bags of an airship.
4. A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects.
5. A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.
6. The shape of a sound, which may be controlled by a synthesizer or sampler.
7. The information used for routing a message that is transmitted with the message but not part of its contents.
8. An enclosing structure or cover, such as a membrane; a space between two membranes
9. The set of limitations within which a technological system can perform safely and effectively.
10. The nebulous covering of the head or nucleus of a comet; a coma.
11. An earthwork in the form of a single parapet or a small rampart, sometimes raised in the ditch and sometimes beyond it.

envelope line

gas holder

put inside

top side

pneumathode

letter envelope

gas cell

gas bag

envelope card

tracheal sac

pneumatic bag

air-pocket

thin-gauge skin

Frequency

Hyphenated as

en‧vel‧ope

Pronounced as (IPA)

/ˈɛnvələʊp/

PIE word *h₁én From French enveloppe. The engineering sense is derived from flight envelope. The verb is from the noun.

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