radiator

noun

ra·​di·​a·​tor ˈrā-dē-ˌā-tər How to pronounce radiator (audio)
 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Avoid opening the radiator cap immediately: Wait until the engine cools to prevent burns. Bethany Wales, Sacbee.com, 30 June 2025 Then there are the two new heat exchangers up front that boost the total radiator count to 15. Lawrence Ulrich, Robb Report, 25 June 2025 Its eight radiators handle everything from high and low-temp loops to oil cooling – which is how Bugatti cools the Tourbillon's batteries that power its three identically spec'd electric motors. New Atlas, 23 June 2025 John’s room has a window unit, a fan, and a radiator. Adriane Quinlan, Curbed, 16 June 2025 See All Example Sentences for radiator

Word History

First Known Use

1836, in the meaning defined above

Time Traveler
The first known use of radiator was in 1836

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Cite this Entry

“Radiator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiator. Accessed 10 Jul. 2025.

Kids Definition

radiator

noun
ra·​di·​a·​tor ˈrād-ē-ˌāt-ər How to pronounce radiator (audio)
: 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

More from Merriam-Webster on radiator

Last Updated: - Updated example sentences
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