envelope vs gasbag what difference

what is difference between envelope and gasbag


Etymology 1

From French enveloppe.


  • (Received Pronunciation) IPA(key): /ˈɛn.və.ləʊp/, /ˈɒn.və.ləʊp/
  • (General American) enPR: än′vəlōp’, ĕn′vəlōp’; IPA(key): /ˈɛn.vəˌloʊp/, /ˈɑn.vəˌloʊp/


envelope (plural envelopes)

  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. (geometry) 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. (electronics) A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.
  6. (music) The shape of a sound, which may be controlled by a synthesizer or sampler.
  7. (computing) The information used for routing a message that is transmitted with the message but not part of its contents.
  8. (biology) An enclosing structure or cover, such as a membrane; a space between two membranes
  9. (engineering) The set of limitations within which a technological system can perform safely and effectively.
  10. (astronomy) 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.
    (Can we find and add a quotation of Wilhelm to this entry?)
  • (something that envelops): wrapper
  • (bag containing the lifting gas): gasbag
Derived terms

See also

  • Wikipedia article on envelopes used for mailing
  • Wikipedia article on envelopes in geometry

Etymology 2

See envelop.


  • enPR: ĕn-vĕl’əp, IPA(key): /ɛnˈvɛləp/
  • for audio, see envelop


envelope (third-person singular simple present envelopes, present participle enveloping, simple past and past participle enveloped)

  1. Archaic form of envelop.
    • 1877, James Booth, A Treatise on Some New Geometrical Methods (page 209)
      Again, if the plane of the impressed couple intersects the mean plane between N and C, it will envelope the cone whose focals are ON, ON′, and whose internal axis is therefore OA.



From French enveloppe, from envelopper.


  • (Portugal) IPA(key): /ẽ.vɨ.ˈlɔ.pɨ/
  • (Brazil) IPA(key): /ẽ.ve.ˈlɔ.pi/
  • Hyphenation: en‧ve‧lo‧pe


envelope m (plural envelopes)

  1. envelope



gas +‎ bag.


  • (Received Pronunciation, General American) IPA(key): /ˈɡæsbæɡ/
  • Hyphenation: gas‧bag


gasbag (plural gasbags)

  1. A bag or bladder to hold a reservoir of gas, as in a hot-air balloon.
  2. (figuratively) A person who is overly garrulous or prone to making empty, unsupportable statements; a windbag.


  • (person): blowhard
  • (both senses): windbag

Derived terms

  • gasbaggery



gasbag (third-person singular simple present gasbags, present participle gasbagging, simple past and past participle gasbagged)

  1. (intransitive) To speak foolishly, pompously, or at length; to blather.

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