jacket

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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

 

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.

jacket

[′jak·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

jacket
A metal shroud used to insulate a portion of the hot section of a gas turbine engine. A jacket prevents heat damage to the aircraft structure.

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.
References in classic literature ?
McGREGOR hung up the little jacket and the shoes for a scare-crow to frighten the blackbirds.
It was the second little jacket and pair of shoes that Peter had lost in a fortnight!
The red colors above faded away as the sun vanished, but a million stars were lighted, a million lamps shone; and the King's Son spread out his arms towards heaven, and wood, and sea; when at the same moment, coming by a path to the right, appeared, in his wooden shoes and jacket, the poor boy who had been confirmed with him.
It was a likely place to sell a jacket in; for the dealers in second-hand clothes were numerous, and were, generally speaking, on the look-out for customers at their shop doors.
I wanted to know,' I said, trembling, 'if you would buy a jacket.
But I resisted all these overtures, and sat there in desperation; each time asking him, with tears in my eyes, for my money or my jacket.
When all of the twelve mice had thus concealed themselves, the Scarecrow buttoned his Jacket securely and then arose and thanked the Queen for her kindness.
The girl in the tan jacket turned again, and looked in the eyes of Mrs.
Pickwick, in the same tone, 'it is not half the insult to you, that your appearance in my presence in a green velvet jacket, with a two-inch tail, would be to me.
Tupman in full brigand's costume, with a very tight jacket, sitting like a pincushion over his back and shoulders, the upper portion of his legs incased in the velvet shorts, and the lower part thereof swathed in the complicated bandages to which all brigands are peculiarly attached.
Billina whispered something in the Scarecrow's ear that made him smile and put his hands in his jacket pockets.
The Nome King had left his throne and pressed through his warriors to the front ranks, so he could see what was going on; but as he faced Ozma and her friends the Scarecrow, as if aroused to action by the valor of the private, drew one of Billina's eggs from his right jacket pocket and hurled it straight at the little monarch's head.