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
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Meanwhile, the life flight helicopter was blown off the roof and surrounding debris entered the radiators hospital’s generators, leaving the building without electricity, according to a presentation from Johnson County Emergency Management. Alex Gurley, People.com, 19 Mar. 2025 To address that, Nokia developed radiator designs to ensure the technology remains operational. IEEE Spectrum, 7 Mar. 2025 Though the top is long enough that a 420mm radiator mount could have been placed there, radiators that large might have interfered with power-supply installation, thus the 360mm official suggestion. PCMAG, 8 Mar. 2025 The removable drive cage leaves only 35mm of front-panel radiator space (that is, thickness) and 190mm of room for a power supply in its default position, whereas moving it to its other position closes the power supply space by 30mm while opening frontal space by the same amount. PCMAG, 2 Mar. 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 2 Apr. 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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