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 paint is deep (choose glossy red or black), and is offset by minimal but tasteful brightwork around the gas tank and radiator cowls. —William Roberson, Forbes, 20 Feb. 2025

Mark built the radiator cover, a dresser by the window, and the angular nightstands. —Adriane Quinlan, Curbed, 13 Feb. 2025

For your car, get the radiator system serviced or check the antifreeze level yourself with an antifreeze tester. —Daniel R. Depetris, Newsweek, 31 Jan. 2025

His body was dragged 273 feet, the impact so severe that investigators found radiator fluid on his body. —Ryan Lillis, Sacramento Bee, 17 Jan. 2025

Word History

First Known Use

1836, in the meaning defined above

Rhymes for radiator

• activator
• actuator
• agitator
• alligator
• allocator
• alternator
• animator
• annotator
• applicator
• arbitrator
• aspirator
• aviator

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