radiator

noun

ra·​di·​a·​tor ˈrā-dē-ˌā-tər 

 dialectal  ˈra-

: one that radiates: such as

a

: any of various devices (such as a series of pipes or tubes) for transferring heat from a fluid within to an area or object outside

b

: a transmitting antenna

Examples of radiator in a Sentence

Recent Examples on the Web

The radiator panel, fork guards, and headlamp surround are all unique, while the motocross fenders are borrowed from a Honda SL350. —New Atlas, 27 Jan. 2025

For your car, get the radiator system serviced or check the antifreeze level yourself with an antifreeze tester. —Rachel Dobkin, Newsweek, 24 Jan. 2025

Mary abandons them, and Henry, the reluctant father, begins experiencing strange visions about the Man in the Planet, a lady living in the radiator, and his own head popping off and being turned into erasers at a pencil factory. —Ars Technica, 17 Jan. 2025

By the twentieth century, new technologies (light bulbs, radiators, gas heat) meant that fires didn’t start as often. —Daniel Immerwahr, The New Yorker, 14 Jan. 2025

Word History

First Known Use

1836, in the meaning defined above

Kids Definition

radiator

noun

ra·​di·​a·​tor ˈrād-ē-ˌāt-ər 

: one that radiates

especially : any of various devices (as a set of pipes or tubes) for transferring heat from a fluid within to an area or object outside