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

According to the museum, which owns it, the children were uninjured, but the bus suffered damage to its brass radiator, frame and steering wheel. Gary Gastelu, Fox News, "Schoolkids crash classic double-decker Disney bus at museum," 19 July 2018 The transmission cooler inside the radiator doesn’t help much if there is little airflow. Bob Weber, chicagotribune.com, "Shifting from manual to automatic transmission can be a grind," 21 Jan. 2018 Even more modern models are heavy and awkward to move around, like the kind that resemble radiators on wheels. Kaitlin Menza, House Beautiful, "Yes, Attractive Space Heaters Actually Exist," 1 Feb. 2019 Mix inside the wafer bag until mushy. Bake on scalding hot radiator. Corinne Ramey, WSJ, "Who Serves the Best Holiday Carrot Cake? Hint: It Has a Captive Audience," 25 Dec. 2018 Vocals and other high-mids are presented with good clarity, and bass is still present on most tracks thanks to the pair of passive radiators on the back of the speakers. Jeff Dunn, Ars Technica, "The Ars Holiday Gift Guide 2018—good tech for the home and home office," 19 Nov. 2018 Riotoro The case augments those cooling capabilities with room for up to seven 120mm fans, or two 240mm liquid-cooling radiators. Brad Chacos, PCWorld, "Riotoro's wild Project Morpheus case shape-shifts from compact to colossal," 4 June 2018 According to Wallpaper, many of the original details, like door handles, radiator caps, built-in furniture units, and window casings, will be preserved and restored. Liz Stinson, Curbed, "This Brutalist masterpiece is now a gorgeous coworking space," 12 Dec. 2018 By facing each other end-on, the thickness of the membrane becomes the critical size of the radiator. Chris Lee, Ars Technica, "Edge on cooling from nanostructure beats physical limit," 11 Sep. 2018

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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Statistics for radiator

Last Updated

12 Apr 2019

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Time Traveler for radiator

The first known use of radiator was in 1836

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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

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More from Merriam-Webster on radiator

Rhyming Dictionary: Words that rhyme with radiator

Spanish Central: Translation of radiator

Nglish: Translation of radiator for Spanish Speakers

Britannica.com: Encyclopedia article about radiator

Comments on radiator

What made you want to look up radiator? Please tell us where you read or heard it (including the quote, if possible).


to affect and impair by alcohol or a drug

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