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Jacket

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.01 sec.
jacket
A plastic housing that contains a floppy disk. The 5.25" disk is built into a flexible jacket; the 3.5" disk uses a rigid jacket.
jacket Engineering
1. any exterior covering or casing, such as the insulating cover of a boiler
2. the part of the cylinder block of an internal-combustion engine that encloses the coolant

jacket [′jakĀ·ət]
(mechanical engineering)
The space around an engine cylinder through which a cooling liquid circulates.
(nucleonics)
A thin container for one or more fuel slugs, used to prevent the fuel from escaping into the coolant of a reactor. Also known as can; cartridge.
(ordnance)
Cylinder of steel covering and strengthening the breech end of a gun or howitzer tube.
The water jacket on some machine guns.
(petroleum engineering)
The support structure of a steel offshore production platform; it is fixed to the seabed by piling, and the superstructure is mounted on it.

jacket
jacket, 1
1. A metal or cloth covering over the heat insulation which is applied to exposed heating pipes and ducts.
2. An outer casing around a pipe or vessel, the space between being filled with a fluid for cooling, heating, or maintaining a fixed temperature.

Jacket 

a covering, usually removable, of a book or booklet in the form of a sheet with flaps. It is generally made of heavy paper coated for purposes of reinforcement or covered with a transparent synthetic film that also improves the jacket’s appearance. Jackets are sometimes made from polymer films. Originally, jackets were used to protect the bindings of expensive editions from damage; they were later used for purposes of publicity as well. The jacket sometimes serves a purely aesthetic purpose.



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It was a blue jacket with brass buttons, quite new.
A rustling was heard in the bushes, and a little boy stood before the King's Son, a boy in wooden shoes, and with so short a jacket that one could see what long wrists he had.
Indeed, I foresaw pretty clearly that my jacket would go next, and that I should have to make the best of my way to Dover in a shirt and a pair of trousers, and might deem myself lucky if I got there even in that trim.
 
 
 
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