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 satellites’ on-board computing power will generate significant heat, requiring a large radiator (more on this below). — Eric Berger, ArsTechnica, 15 July 2026

Reddick finished 36th after being forced to go to the garage and change his car’s radiator. — Steve Millar, Chicago Tribune, 6 July 2026

To this day, McCluan can still smell the radiator fluid and diesel fuel that leaked from her car. — Scott Maxwell, The Orlando Sentinel, 26 June 2026

Common causes for overheating include coolant leaks, thermostat issues, or problems with the water pump and radiator. — Charles Singh, USA Today, 22 June 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