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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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 Its exterior storage box hosts a water tank, along with a heater and propane gas bottle. Adam Williams march 24, New Atlas, 24 Mar. 2026 Officials said the explosion may have involved a heater unit. Marley Malenfant, Austin American Statesman, 24 Mar. 2026 The superstar guard had been on a historic heater, averaging 40 points over the previous nine games. Los Angeles Times, 24 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

Browse Nearby Words

Cite this Entry

“Heater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heater. Accessed 26 Mar. 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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