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

Thermostat wars aren't it, speaking as someone in a relationship with a human radiator. —Meredith Wilshere, PEOPLE, 25 Oct. 2025

The dominant cooling strategies today center around advances in heat sinks, fans, and radiators. —IEEE Spectrum, 20 Oct. 2025

This research supports the development of X-point radiator (XPR) regimes, a promising operating mode for future fusion power plants. —Aman Tripathi, Interesting Engineering, 19 Oct. 2025

The Sport Pack includes a quickshifter, engine guard, radiator grille protection, and a bikini fairing, along with other cosmetic upgrades. —New Atlas, 19 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