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.
Using electrical heaters to simulate nuclear fuel, PRECURSOR will demonstrate the working of the 30 MW reactor at a reduced scale. Ameya Paleja, Interesting Engineering, 27 May 2026 In his first at-bat Tuesday night, Betts fell behind 0-2 to Rockies starter Kyle Freeland before pummeling a heater in the zone to center field for a two-run blast. Katie Woo, New York Times, 27 May 2026 As a sports city, Orlando is on a heater. Mike Bianchi, The Orlando Sentinel, 26 May 2026 So the same sheet can effectively behave like a solar heater on one side and a radiative cooling system on the other. New Atlas, 25 May 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

Browse Nearby Words

Cite this Entry

“Heater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heater. Accessed 30 May. 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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