noun
radiator
RA-dih-ay-tuh
noun
1
A device that cools a vehicle's engine by transferring heat from coolant to the surrounding air.
"The mechanic found a leak in the car's radiator."
2
A metal heating fixture, typically filled with hot water or steam, used to warm a room.
"She hung her wet coat over the radiator to dry."
How to Use Radiator
Learner’s notesIn plain EnglishA device that gives off heat — either to cool a car engine or to warm a room.
Common pairings
central heating radiator
car radiator
radiator fluid
Word Forms
radiators plural
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The mechanic found a leak in the car's _____.
Etymology
Formed from "radiate" plus the agent suffix "-or", meaning "something that radiates".