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.
As far as the on-field characteristics, the Cubs see a super-athletic pitcher who, despite being only 6-foot-1, can hold his 95-mph heater into games. Sahadev Sharma, New York Times, 17 July 2026 Guests spill out onto the three-part terrace, with its overhead heaters, barbecue space, and The Cigar Garden, where tobacco lovers can take their pick of Havanas from the humidor and lose themselves in a smoky haze until closing time. Condé Nast, Condé Nast Traveler, 16 July 2026 It’s surrounded by enormous planters, there are heaters and a fireplace for when there’s a chill in the air, and there’s a pretty pergola that hides the space from the adjacent parking area. Jess Fleming, Twin Cities, 16 July 2026 That’s great for game day, but Post Malone and Jelly Roll aren’t fouling off heaters during their show. Rashad Alexander, Kansas City Star, 16 July 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 27 Jul. 2026.

Kids Definition

: a device that heats or holds something to be heated

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