ra·​di·​a·​tor | \ ˈrā-dē-ˌā-tər How to pronounce radiator (audio) , dialectal ˈra- \

Definition of radiator

: 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 Metal screening disguises the air-conditioner and radiator but allows air to circulate. Jody Garlock, Better Homes & Gardens, 7 Oct. 2021 The removable hard drive cage, front fan/radiator bracket, and signature cable bar remain so for ease when building. Alaina Yee, PCWorld, 22 Sep. 2021 The basement is unfinished, all of the rooms have custom radiator covers, and the home has central air with two zones. BostonGlobe.com, 1 Oct. 2021 In a somewhat crude comparison, an apartment radiator works in a similar way. Lina Zeldovich, Smithsonian Magazine, 8 Sep. 2021 The Continuation has an electric cooling fan for its radiator and has also been given a slightly smaller steering wheel, most drivers struggling to fit themselves around the massive original. Mike Duff, Car and Driver, 2 Sep. 2021 The radiator was turned off in there and the door was kept shut; its chill was a relief from the dry heat in the rest of the house. Tessa Hadley, The New Yorker, 26 July 2021 Riders can, however, buy some of the parts, such as the radiator guard and number plate mounts, to live out the fantasy in appearance if nothing else. Rachel Cormack, Robb Report, 29 July 2021 Reflective insulation placed behind each radiator, to reduce energy. Bill Mckibben, The New Yorker, 23 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radiator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of radiator

1836, in the meaning defined above

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Time Traveler for radiator

Time Traveler

The first known use of radiator was in 1836

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Dictionary Entries Near radiator

radiation therapy



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Statistics for radiator

Last Updated

19 Oct 2021

Cite this Entry

“Radiator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiator. Accessed 21 Oct. 2021.

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More Definitions for radiator



English Language Learners Definition of radiator

: a large, metal device that is next to the wall in a room and that becomes hot and provides heat for the room when hot water passes through it
: a device that is used to keep the engine of a vehicle from getting too hot


ra·​di·​a·​tor | \ ˈrā-dē-ˌā-tər How to pronounce radiator (audio) \

Kids Definition of radiator

: a device to heat air (as in a room) or to cool an object (as an automobile engine) by heating the surrounding air

More from Merriam-Webster on radiator

Nglish: Translation of radiator for Spanish Speakers

Britannica.com: Encyclopedia article about radiator


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