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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The heaters zoomed out of his hand. Fabian Ardaya, New York Times, 8 Apr. 2026 The heater registered 10 of 12 first-pitch strikes and generated 14 swings, per Statcast. Jaylon Thompson, Kansas City Star, 7 Apr. 2026 Its sauna area fits up to four adults and has an electric sauna heater. Adam Williams april 05, New Atlas, 5 Apr. 2026 The smell reminded the crew of the odor from an electrical heater being turned on for the first time in a long while. Tariq Malik, Space.com, 5 Apr. 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 13 Apr. 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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