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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Heliot Ramos worked a 10-pitch at-bat, staying alive by fouling off four pitches, but struck out swinging on an elevated heater to end the inning. Justice Delos Santos, Mercury News, 29 Mar. 2026 Another Suqaylabiyah resident, Nafeh al-Nader, said young men broke the gate of his house and kicked a diesel heater, setting a room on fire. ABC News, 28 Mar. 2026 The visible dancing flame of the optional Dickinson Marine Newport heater can be seen just behind that shelving unit. New Atlas, 26 Mar. 2026 Ball, who has been on a heater of late, set the tone early by showing off his full bag of tricks — shooting 3s off one foot, throwing no-look dimes and outleaping opponents for rebounds, seemingly toying with the Kings at times. CBS News, 25 Mar. 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 3 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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