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.
The heaters hissed and clanked, let off steam, fogged up the windows. Literary Hub, 16 Dec. 2025 Sunlight is like a heater that bakes the moisture out of cut greenery. Leanne Potts, Better Homes & Gardens, 15 Dec. 2025 There also are add-on heaters that can be used in any birdbath. Arricca Elin Sansone, Southern Living, 15 Dec. 2025 Ensure that the heater and defroster work properly. Marina Johnson, Louisville Courier Journal, 15 Dec. 2025 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 Dec. 2025.

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

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