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Meaning of word coolant from English dictionary with examples, synonyms and antonyms.

coolant   noun

Meaning : A fluid agent (gas or liquid) that produces cooling. Especially one used to cool a system by transferring heat away from one part to another.

Example : He added more coolant to the car's radiator.
The atomic reactor used a gas coolant.
Lathe operators use an emulsion of oil and water as a coolant for the cutting tool.