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.
Bored Lord and AceMo, longtime bastions of their respective coastal scenes, offer up two rumbling club heaters. Benny Sun, Pitchfork, 17 June 2026 There are two ways to gauge Georgia’s current recruiting class — even after the Bulldogs have gone on a heater over the last week. Jeff Sentell, AJC.com, 17 June 2026 Common sources include heaters, ovens, fireplaces, water heaters, broken pipes, grills, and generators. Olivia Young, Travel + Leisure, 17 June 2026 The Mini comes climate controlled via a Webasto diesel heater and an air conditioner, carries a large 200-L fresh water tank, and has prewiring for a TV and multimedia equipment. New Atlas, 14 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 20 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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