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

Equally important are the myriad active air vents that feed cooling radiators but also shape the airflow through and under the car’s body, with different configurations of opening and closing depending on whether the driver is going for efficiency or performance. —Jonathan M. Gitlin, ArsTechnica, 26 May 2026

This potent little cylinder has an attention-getting sound profile, with punchy bass courtesy of dual 48mm drivers and a passive radiator. —K. Thor Jensen, PC Magazine, 26 May 2026

Unlike a Vespa, there is no underseat storage (again, same as vintage Lambrettas) and Genuine has mounted the engine’s radiator under the footwells since there is no space for it in the leg shield section, which is where Vespa puts its radiator. —William Roberson, Forbes.com, 24 May 2026

If several of these meteorites puncture the radiator fins, the plant will be unable to cool down properly. —Robin George Andrews, Scientific American, 19 May 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