air jacket
Americannoun
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an envelope of enclosed air around part of a machine, as for checking the transmission of heat.
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British. life jacket.
noun
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an air-filled envelope or compartment surrounding a machine or part to reduce the rate at which heat is transferred to or from it Compare water jacket
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a less common name for life jacket
Etymology
Origin of air jacket
First recorded in 1905–10
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
