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
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As the heater warms, the LCE layer contracts while the Kapton tape expands, forcing the entire MIPM structure to bend and curl into a protective sphere – just like an armadillo’s defensive shell. Maryna Holovnova, New Atlas, 9 June 2026 For instance, at Zola and BarZola on Bryant Street on a recent Friday, workers were installing state-of-the-art overhead heaters at the restaurants’ parklet. Kate Bradshaw, Mercury News, 9 June 2026 What a heater June Madness is on right now. Zach Dean Outkick, FOXNews.com, 8 June 2026 There’s plenty of time for a few teams to go on a heater or completely implode. Levi Weaver, New York Times, 8 June 2026 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 15 Jun. 2026.

Kids Definition

heater

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

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