different between jacket vs envelope

English

Etymology

From Middle French jacquet, diminutive of Old French jaque.

Pronunciation

• (Received Pronunciation) IPA^(key): /?d??æk.?t/
• (General American) IPA^(key): /?d??æk?t/, /?d??æk?t/
• Rhymes: -æk?t
• Hyphenation: jack?et

Noun

jacket (plural jackets)

1. A piece of clothing worn on the upper body outside a shirt or blouse, often waist length to thigh length.
2. A piece of a person's suit, beside trousers and, sometimes, waistcoat; coat (US)
3. A protective or insulating cover for an object (e.g. a book, hot water tank, bullet.)
4. (slang) A police record.
   • 2014, Inherent Vice, 01:54:00:

     "I need to look up somebody's jacket."

5. (military) In ordnance, a strengthening band surrounding and reinforcing the tube in which the charge is fired.
6. The tough outer skin of a baked potato.

   Cook the potatoes in their jackets.

Synonyms

• (piece of a person's suit): coat (US)
• (removable protective cover): sleeve

Derived terms

Descendants

Translations

Verb

jacket (third-person singular simple present jackets, present participle jacketing, simple past and past participle jacketed)

1. (transitive) To enclose or encase in a jacket or other covering.
   • 1897, Alexander James Wallis-Tayler, Motor Cars Or Power-carriages for Common Roads

     ...to...prevent...the loss of heat...there is also a layer of silicate cotton or slag wool. This latter material is also employed to jacket the chimney for a certain portion of its length.

Derived terms

• bad-jacket
• snitch-jacket

English

Etymology 1

From French enveloppe.

Pronunciation

• (Received Pronunciation) IPA^(key): /??n.v?.l??p/, /??n.v?.l??p/
• (General American) enPR: än?v?l?p', ?n?v?l?p'; IPA^(key): /??n.v??lo?p/, /??n.v??lo?p/

Noun

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?)

Synonyms

• (something that envelops): wrapper
• (bag containing the lifting gas): gasbag

Derived terms

Translations

See also

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

Etymology 2

See envelop.

Pronunciation

• enPR: ?n-v?l'?p, IPA^(key): /?n?v?l?p/
• for audio, see envelop

Verb

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.

Portuguese

Etymology

From French enveloppe, from envelopper.

Pronunciation

• (Portugal) IPA^(key): /?.v?.?l?.p?/
• (Brazil) IPA^(key): /?.ve.?l?.pi/
• Hyphenation: en?ve?lo?pe

Noun

envelope m (plural envelopes)

1. envelope