coolant

American  

[koo-luhnt] / ˈku lənt /

noun

1. a substance, usually a liquid or a gas, used to reduce the temperature of a system below a specified value by conducting away the heat produced in the operation of the system, as the liquid in an automobile cooling system or the fluid that removes heat from the core of a nuclear reactor.

2. a lubricant that dissipates the heat caused by friction.

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coolant British  

/ ˈkuːlənt /

noun

1. a fluid used to cool a system or to transfer heat from one part of it to another

2. a liquid, such as an emulsion of oil, water, and soft soap, used to lubricate and cool the workpiece and cutting tool during machining

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Etymology

Origin of coolant

First recorded in 1925–30; cool + -ant

Example Sentences

A student from Hurlford, she then went down a rabbit hole looking at the amount of water that would be needed for coolant, the process which stops the computer chips there from overheating.

From BBC

Its Arctic climate acts as a natural coolant for heat-intensive hardware.

From The Wall Street Journal

Chillers circulate water or another coolant through pipes to absorb heat, then transfer it to a cooling tower or other system to remove it.

From MarketWatch

Opened in 1971, it was the second Magnox power station in Wales after Trawsfynydd came online six years earlier, with seawater an ideal coolant due to its location on Anglesey's northern coast.

From BBC

Drivers are advised to check tyres, expect delays, ensure oil and coolant levels are correct.

From BBC