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
: fastball

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.
The Guardians treasure pitchers with elite extension, and Yoho fits that description, as his 94 mph heater can sneak up on hitters. — Zack Meisel, New York Times, 1 Aug. 2026 These mid-grade tubs may have 24 or more jets and inline heaters to maintain water temperature. — Bestreviews, Mercury News, 29 July 2026 Rentals for tents, tables, chairs, heaters and fire pits added up to more than $50,600. — Sacbee.com, 27 July 2026 Skenes had frozen Crow-Armstrong during his previous at-bat by catching the center fielder looking at a full-count fastball over the middle of the plate, the fifth straight heater Skenes threw. — Meghan Montemurro, Chicago Tribune, 26 July 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

Phrases Containing heater

Rhymes for heater

See All Rhymes for heater

Browse Nearby Words

heat equator
heater
heater car
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Cite this Entry

“Heater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heater. Accessed 6 Aug. 2026.

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Kids Definition

heater

noun
heat·​er ˈhēt-ər How to pronounce heater (audio)
: a device that heats or holds something to be heated

More from Merriam-Webster on heater

Nglish: Translation of heater for Spanish Speakers

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