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

To manage thermal loads and propulsion, the craft will employ lightweight composite-titanium radiators and an advanced 48-kW electric propulsion system, which also doubles as the primary spacecraft bus for communications and power distribution. —Mrigakshi Dixit, Interesting Engineering, 23 Apr. 2026

Historic details, including a decorative fireplace, parquet floors, and cast iron radiators add charm to the sunny maison. —Katie Schultz, Architectural Digest, 23 Apr. 2026

Some of the original plane’s pieces, such as the wooden planks and a radiator, were restored and integrated into the replica. —Victoria Le, Oc Register, 14 Apr. 2026

Atomic-6’s hardware contributions include its Light Wing solar arrays for electricity generation, its Hot Wing radiator systems for cooling and its Space Armor structures for debris protection. —Zachary Hansen, AJC.com, 13 Apr. 2026

Word History

First Known Use

1836, in the meaning defined above

Rhymes for radiator

• coater
• creator
• curator
• debater
• deflator
• dictator
• dilator
• equator
• locator
• mutator
• piscator
• pronator

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