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say it: KOO-luhnt
coolant is a 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". It carries one recorded sense.
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
“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”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for coolant come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.