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 ?
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.
McGREGOR hung up the little jacket and the shoes for a scare-crow to frighten the blackbirds.
Do clothes absorb a little of the character of their wearer, so that I recognised this jacket by a certain coquetry?
Then he lay flat upon the ground and unbuttoned his jacket, displaying the mass of straw with which he was stuffed.
Unc put the other piece of bread in his jacket pocket, after which he again said, as he walked out through the doorway: "Come.
The rattle of hurtling rock through the hollow jacket ceased.
You ought to have a stick laid on the back of your jacket.
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.
But the poor child that had been confirmed was quite ashamed; he looked at his wooden shoes, pulled at the short sleeves of his jacket, and said that he was afraid he could not walk so fast; besides, he thought that the bell must be looked for to the right; for that was the place where all sorts of beautiful things were to be found.
The girl in the tan jacket twisted around to view the pilgrims on the last seat.
Aliosha, it is true, did not stand quite correctly; he kept turning round, trying to look at his little jacket from behind; but all the same he was wonderfully sweet.
He struck the deck with his long staff; the gold head flashed like a falling star; very close behind him a silent old fellow in a richly embroidered black jacket alone of all the Malays around did not follow the masterful gesture with a look.