air jacket
noun
an envelope of enclosed air around part of a machine, as for checking the transmission of heat.
British.
life jacket.
Origin of air jacket
First recorded in 1905–10
Words nearby air jacket
air hole,
air horn,
air hostess,
air hunger,
air injection,
air jacket,
air kiss,
air lance,
air lane,
air layer,
air layering
Example sentences from the Web for air jacket
A is the calorimetric tube, B the air-jacket and L the gauge.
British Dictionary definitions for air jacket
air jacket
noun
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
a less common name for life jacket