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 front end features a new bumper with an integrated splitter, designed at the customer’s request to increase downforce, accelerating airflow to the inner radiator ducts. —Mark Ewing, Forbes.com, 14 May 2025

Each Polestar vehicle keeps its cells as close to optimum temperature as possible using a heat pump and radiators to circulate 20 liters (5.28 gallons) of coolant, about 5 liters (1.32 gallons) of which specifically regulate the battery temps. —Michael Teo Van Runkle, Ars Technica, 25 Mar. 2025

The radiator is low cost and could be manufactured at scale. —IEEE Spectrum, 15 Mar. 2025

Steel eagle heads and sculptural pineapples can be spotted on different levels, as well as replicas of Chrysler’s 1929 radiator hub caps — a tribute to innovation as well as a direct reference to the building’s original owner. —Jacqui Palumbo, CNN Money, 28 Apr. 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