un-jacketed

jacket

[jak-it]
noun
1.
a short coat, in any of various forms, usually opening down the front.
2.
something designed to be placed around the upper part of the body for a specific purpose other than use as clothing: a life jacket.
3.
a protective outer covering.
4.
the skin of a potato, especially when it has been cooked.
6.
the cover of a paperbound book, usually bearing an illustration.
7.
a paper or cardboard envelope for protecting a phonograph record.
8.
a metal casing, as the steel covering of a cannon, the steel cover around the core of a bullet, or the water jacket on certain types of machine guns.
9.
a folded paper or open envelope containing an official document.
verb (used with object)
10.
to put a jacket on (someone or something).

Origin:
1425–75; late Middle English jaket < Middle French ja(c)quet, equivalent to jaque jack3 + -et -et

jacketed, adjective
jacketless, adjective
jacketlike, adjective
underjacket, noun
unjacketed, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
jacket (ˈdʒækɪt)
 
n
1.  a short coat, esp one that is hip-length and has a front opening and sleeves
2.  something that resembles this or is designed to be worn around the upper part of the body: a life jacket
3.  any exterior covering or casing, such as the insulating cover of a boiler
4.  the part of the cylinder block of an internal-combustion engine that encloses the coolant
5.  See dust jacket
6.  a.  the skin of a baked potato
 b.  (as modifier): jacket potatoes
7.  a metal casing used in certain types of ammunition
8.  (US) Brit name: sleeve a cover to protect a gramophone record
9.  chiefly (US) a folder or envelope to hold documents
 
vb
10.  (tr) to put a jacket on (someone or something)
 
[C15: from Old French jaquet short jacket, from jacque peasant, from proper name Jacques James]
 
'jacketed
 
adj
 
'jacket-like
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

jacket
mid-15c., from M.Fr. jaquet, dim. of O.Fr. jaque, a kind of tunic, probably from Jacque, the male proper name, also the generic name of a French peasant (see jacquerie), but possibly associated with jaque (de mailles) "short, tight-fitting coat," originally "coat of mail,"
from Sp. jaco, from Arabic shakk "breastplate." Iakke "a short, close-fitting upper garment" is attested in English from late 14c. Meaning "paper wrapper of a book" is first attested 1894.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

jacket jack·et (jāk'ĭt)
n.

  1. A fixed bandage applied around the body to immobilize the spine.

  2. An artificial crown of a tooth composed of fired porcelain or acrylic resin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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