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

That offset shrinks to only 38mm when installing a 280mm radiator kit. — Thomas Soderstrom, PC Magazine, 10 Oct. 2026

It's designed for allergy sufferers, and if you’re based in the Northeast, fall is just the time to prepare yourself for whatever comes out of that radiator. — Julia Harrison, Architectural Digest, 6 Oct. 2026

So, data-processing satellites built to house AI computing will likely need massive radiators to expel heat away from their inner processing chips. — Jackie Wattles, CNN Money, 1 Oct. 2026

Though space is cold, its vacuum is a lousy place to dissipate heat, which is why Suncatcher’s chips must clock out to cool down and why the satellites require specialized radiators. — Peter Hall, Scientific American, 1 Oct. 2026

Word History

First Known Use

1836, in the meaning defined above

Rhymes for radiator

• creator
• curator
• debater
• deflator
• dictator
• dilator
• equator
• locator
• piscator
• pronator
• relator
• rotator

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