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water jacket

noun

water jacket

noun
1

An enclosed space, or the walls used to create it, that surrounds an object to be heated or cooled by water flowing around it.

  • The headbolt heater consists of a hollow steel bolt containing an electric heating element. This device is designed to heat the water jacket and is applied to the engine head by replacing a headbolt.1949, American Railway Engineering Association, Bulletin - Issues 481-487, page 277:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.