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

For talking purposes Crane slid her prototype onto a table holding a number of others, and retreated to the radiator. —thehustle.co, 20 Mar. 2026

Its dual custom passive radiators provide a best-in-class bass punch, while its 14-hour battery life ensures your soundtrack outlasts the sunset. —Juhi Wadia, PC Magazine, 19 Mar. 2026

When the engine is cold, the first step is to check the coolant level in both the radiator and the expansion tank. —John Paul, The Providence Journal, 13 Mar. 2026

Transmission fluid displays as 3 and radiator flush at 5. —Hartford Courant, 28 Feb. 2026

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