Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “coolant”


noun [C or U] uk   /ˈkuː.lənt/ specialized us  
a specially prepared liquid that is used to stop a machine from getting too hot while it is operatingTypes of chemicalSpecific chemicals, chemical compounds and gasesSubstances and structures in the body
(Definition of coolant from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of coolant?
Add Cambridge dictionaries to your browser to your website

Translations of “coolant”

Word of the Day


an alcoholic drink made from apples

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More