Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun coolant

1 sense of coolant

Sense 1
coolant -- (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")
       => fluid -- (a substance that is fluid at room temperature and pressure)
       => agent -- (a substance that exerts some force or effect)