Jump To:

• water jacket
  water jacket

  noun

  a water-filled casing or compartment used to water-cool something, as an engine or machine gun.
• water-jacket
  water-jacket

  verb (used with object)

  to surround or fit with a water jacket.

water jacket

¹ American  

noun

1. a water-filled casing or compartment used to water-cool something, as an engine or machine gun.

---

water-jacket ² American  

[waw-ter-jak-it, wot-er-] / ˈwɔ tərˌdʒæk ɪt, ˈwɒt ər- /

verb (used with object)

1. to surround or fit with a water jacket.

---

water jacket British  

noun

1. a water-filled envelope or container surrounding a machine, engine, or part for cooling purposes, esp the casing around the cylinder block of a pump or internal-combustion engine Compare air jacket

---

Etymology

Origin of water jacket¹

First recorded in 1865–70

Origin of water-jacket²

First recorded in 1875–80

Example Sentences

See Examples For:

water jacket water-jacket

It has a feeder which pushes coal in at one end and ashes out at the other, a water jacket, a small pump which circulates the heated water rapidly to radiators.

From Time Magazine Archive

The individual cylinder design was of extreme simplicity, a single iron casting embodying everything except the water jacket.

From The Wright Brothers' Engines and Their Design by Leonard S. Hobbs

As the water becomes cooler, it falls to the bottom of the radiator and it is again supplied to the water jacket.

From Aviation Engines Design?Construction?Operation and Repair by Victor Wilfred Pag?

So much confidence seems to be placed in the isothermal features of this machine that usually no water jacket or spray pump is applied.

From Scientific American Supplement, No. 799, April 25, 1891 by Various

The arrows show the inlet and outlet for the cooling water that is kept running through the water jacket round the nitrometer tube.

From Nitro-Explosives: A Practical Treatise by P. Gerald (Percy Gerald) Sanford

The man behind the gun polished a dull place on the brass water-jacket with the blue sleeves of his coat, and looked up.

From Sanders of the River by Edgar Wallace

They stood at attention for a moment, then opened outwards, and in the centre of each party gleamed the fat water-jacket of a Maxim gun.

From Sanders of the River by Edgar Wallace

The loss of heat through the water-jacket is thus less in the case of a high-compression than in that of a low-compression motor.

From Aviation Engines Design?Construction?Operation and Repair by Victor Wilfred Pag?

In a steam-boiler the burning fuel is enclosed either by fire-brick or a "water-jacket," forming part of the boiler.

From How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use by Archibald Williams

Figure 8.—Development engine No. 3, 1904-1906, showing auxiliary exhaust port, separate one-piece water-jacket block.

From The Wright Brothers' Engines and Their Design by Leonard S. Hobbs