envelope
Pronunciation: /ˈɛnvə(ˌ)ləʊp/
The English word “envelope” has 12 meanings listed here.
noun
- A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.
- Something that envelops; a wrapping.
- A bag containing the lifting gas of a balloon or airship; fabric that encloses the gas-bags of an airship.
- A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects.
- A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.
- The shape of a sound, which may be controlled by a synthesizer or sampler.
- The information used for routing a message that is transmitted with the message but not part of its contents.
- An enclosing structure or cover, such as a membrane; a space between two membranes
- The set of limitations within which a technological system can perform safely and effectively.
- The nebulous covering of the head or nucleus of a comet; a coma.
- An earthwork in the form of a single parapet or a small rampart, sometimes raised in the ditch and sometimes beyond it.
verb
Etymology
PIE word *h₁én From French enveloppe. The engineering sense is derived from flight envelope. The verb is from the noun.
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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.