heater

noun

heat·​er ˈhē-tər How to pronounce heater (audio)
1
: one that heats
especially : a device that imparts heat or holds something to be heated
2

Examples of heater 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.
Florida definitely has one in Clayton, who’s been on an all-time heater. The Athletic College Basketball Staff, New York Times, 7 Apr. 2025 Carbon monoxide poisoning can occur when a fuel-burning appliance or machine — such as a furnace, heater or generator — is not working or vented properly. Vanessa Etienne, People.com, 4 Apr. 2025 Ketel Marte, who agreed to a six-year, $116 million extension before the game, then added an RBI single off Rodón’s heater, which only averaged 93 mph for the evening. Gary Phillips, New York Daily News, 3 Apr. 2025 Cars, furnaces, stoves, certain heaters and generators can all produce carbon monoxide. Jordan Freiman, CBS News, 31 Mar. 2025 See All Example Sentences for heater

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of heater was in the 15th century

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Cite this Entry

“Heater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heater. Accessed 4 May. 2025.

Kids Definition

heater

noun
heat·​er ˈhēt-ər How to pronounce heater (audio)
: a device that heats or holds something to be heated

More from Merriam-Webster on heater

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