Coolant definition

ko͝olənt

An agent that produces cooling, especially a fluid that draws off heat by circulating through an engine or by bathing a mechanical part.

noun

A substance, usually a fluid, used to remove heat, as from a nuclear reactor, an internal-combustion engine, molten metal, etc.

noun

A medium, usually fluid, used to draw heat from an object.

Coolant is used in car engines and industrial processes, where excess heat could cause machine damage.

noun

Other Word Forms

Singular:

coolant

Plural:

coolants