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 The older model lacked a woofer, Chan said, and instead relied on a smaller speaker technology known as a passive radiator. Jonathan Vanian, Fortune, "Here’s what Google’s new Nest Audio speakers are like," 5 Oct. 2020 Fixing the radiator in Josto’s office, Rabbi tells Satchel that everything breaks, but there’s a right way to fix it. Nick Schager, EW.com, "Fargo recap: The first shots of war," 5 Oct. 2020 The front grille admits more air, and an uprated radiator core makes use of that to reduce coolant temperatures by up to 10˚C. Jonathan M. Gitlin, Ars Technica, "The Honda Civic Type-R is more fun to drive than a supercar," 5 Oct. 2020 The dual-motor EV looks to be roughly the same size as the Mercedes-Benz GLS, but that face reminds us of a late-Victorian heat radiator. Austin Irwin, Car and Driver, "2020 Beijing Auto Show's 14 Most Interesting Cars and Concepts," 4 Oct. 2020 Radiator fluid, which is also known as coolant or antifreeze, works to extract heat from the engine and dissipates it through the radiator. Alex Leanse, Popular Mechanics, "How to Get Your Car Ready For Your Next Road Trip," 13 June 2020 Engines produce a lot of heat and the radiator keeps it cool. Alex Leanse, Popular Mechanics, "How to Get Your Car Ready For Your Next Road Trip," 13 June 2020 The biggest issue drivers raised during a call a couple days ago, Frye said, was how hot their 1.5-liter hydration bags were getting while sitting near the radiator. Nathan Brown, The Indianapolis Star, "IndyCar introduces new cooling, hydration measures to address cockpit heat: 'It’s brutal'," 10 July 2020 The next morning, the radiator, the water heater, and all the light switches were useless things. Sonia Faleiro, Harper's Magazine, "Valley of Unrest," 23 June 2020

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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Statistics for radiator

Last Updated

18 Oct 2020

Cite this Entry

“Radiator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiator. Accessed 24 Oct. 2020.

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More Definitions for radiator


How to pronounce radiator (audio)

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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