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1. A flat paper container, especially for a letter, usually having a gummed flap.
2. Something that envelops; a wrapping.
3. Biology An enclosing structure or cover, such as a membrane or the outer coat of a virus.
4. The bag containing the gas in a balloon or airship.
5. The set of limitations within which a technological system, especially an aircraft, can perform safely and effectively.
a. A usually spherical region of interstellar matter surrounding a forming star and interacting with the star's gravitational and radiation fields.
b. The coma of a comet.
7. Mathematics A curve or surface that is tangent to every one of a family of curves or surfaces.
push the envelope
To exceed or try to exceed the existing limits of a discipline or activity.
[French enveloppe, from envelopper, to envelop, from Old French envoloper; see envelop.]
Usage Note: Some people dislike the pronunciation (ŏn′və-lōp′), arguing that it is pretentious for being pseudo-French and that it is unnecessary, since there is a perfectly acceptable Anglicized pronunciation, (ĕn′və-lōp′). But the pronunciation with (ŏn) is gaining in acceptability: in our 1992 survey, 30 percent of the Usage Panel used it exclusively, and another 9 percent used it occasionally; by 2011, 46 percent selected it as their preferred pronunciation. Both forms should be considered standard.
1. a flat covering of paper, usually rectangular in shape and with a flap that can be folded over and sealed, used to enclose a letter, etc
2. any covering or wrapper
3. (Biology) biology any enclosing structure, such as a membrane, shell, or skin
4. (Aeronautics) the bag enclosing the gas in a balloon
5. (Mathematics) maths a curve or surface that is tangent to each one of a group of curves or surfaces
6. (Electronics) electronics the sealed glass or metal housing of a valve, electric light, etc
7. (General Physics) telecomm the outer shape of a modulated wave, formed by the peaks of successive cycles of the carrier wave
8. push the envelope informal to push the boundaries of what is possible
[C18: from French enveloppe, from envelopper to wrap around; see envelop; sense 8 from aeronautics jargon, referring to graphs of aircraft performance]
en•ve•lope(ˈɛn vəˌloʊp, ˈɑn-)
1. a flat paper container, as for a letter or thin package, usu. having a gummed flap or other means of closure.
2. something that envelops; a wrapper or surrounding cover.
3. a surrounding or enclosing part, as an integument or an outer membrane.
4. Geom. a curve or surface tangent to each member of a set of curves or surfaces.
5. the fabric structure enclosing the gasbag of an aerostat.
6. the gasbag itself.
7. the airtight glass or metal housing of a vacuum tube.
8. the technical limits within which an aircraft or electronic system may be safely operated.Idioms:
push the envelope, to stretch established limits, as in technological advance or social innovation.
[1700–10; < French enveloppe, derivative of envelopper to envelop]
Switch to new thesaurus
|Noun||1.||envelope - a flat (usually rectangular) container for a letter, thin package, etc.|
container - any object that can be used to hold things (especially a large metal boxlike object of standardized dimensions that can be loaded from one form of transport to another)
window envelope - an envelope with a transparent panel that reveals the address on the enclosure
|2.||envelope - any wrapper or covering|
|3.||envelope - a curve that is tangent to each of a family of curves|
|4.||envelope - a natural covering (as by a fluid); "the spacecraft detected an envelope of gas around the comet"|
|5.||envelope - the maximum operating capability of a system (especially an aircraft); "test pilots try to push the envelope"|
|6.||envelope - the bag containing the gas in a balloon|
bag - a flexible container with a single opening; "he stuffed his laundry into a large bag"
balloon - large tough nonrigid bag filled with gas or heated air
sobre de carta
envelope[ˈenvələʊp] N [of letter] → sobre m (fig) (= wrapping) → funda f
a thin, flat wrapper or cover, especially for a letter. The letter arrived in a long envelope. koevert غِلاف плик envelope obálka der Umschlag konvolut; kuvert φάκελοςsobre ümbrik پاکت نامه kuori enveloppeמעטפה लिफाफा omotnica, omot (levél)boríték amplop umslag busta 封筒 봉투 vokas aploksne; apvalks sampul surat envelopkonvoluttkoperta كڅوړه، پاكټ، جيب envelope plic конверт obálka kuverta koverat kuvert ซอง zarf 信封 конверт; обгортка لفافہ phong bì 信封
envelope→ ظَرْف obálka konvolut Briefumschlag φάκελος sobre kirjekuori enveloppe omotnica busta 封筒 봉투 envelop konvolutt koperta envelope конверт kuvert ซองจดหมาย zarf phong bì 信封
1. n. sobre, objeto de papel de uso postal;