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

Keep your plant away from cold drafts, such as those near doors or windows, and away from heat sources like vents, radiators, and fireplaces. —Lynn Coulter, Better Homes & Gardens, 7 Dec. 2025

When taken into custody after being falsely arrested, 15 years apart, both women were rudely handcuffed at the barracks, Karen Read to a radiator. —Howie Carr, Boston Herald, 29 Nov. 2025

This research supports the advancement of X-point radiator (XPR) regimes, a promising operating mode for future fusion power plants. —Aman Tripathi, Interesting Engineering, 22 Nov. 2025

Eliminate air from hot water radiators. —Phaedra Trethan, USA Today, 22 Nov. 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