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 market has welcomed a raft of new portable propane fire pits, torches and radiators in recent years, but many of them weigh more than a tent on their own, then hook up to a home BBQ-style 20-lb propane tank. —New Atlas, 10 Nov. 2025

Bleeding radiators ensures even heat distribution and improves the overall efficiency of your heating system. —Melissa Fleur Afshar, MSNBC Newsweek, 10 Nov. 2025

Dry heat from a radiator will do that to you. —Cora Frazier, New Yorker, 3 Nov. 2025

Thermostat wars aren't it, speaking as someone in a relationship with a human radiator. —Meredith Wilshere, PEOPLE, 25 Oct. 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