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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.
These areas can easily serve as hosting hubs with the addition of patio furniture or an outdoor heater, or simply a scenic space to enjoy your morning coffee. Maggie Horton, PEOPLE, 25 Nov. 2025 But having the heater on most of the day can equal an expensive electrical bill. Lauren David, Southern Living, 24 Nov. 2025 The heater is currently 20% off, making now the perfect time to upgrade your boring old space heater. Erin Mayer, Better Homes & Gardens, 23 Nov. 2025 Ensure that the heater and defroster work properly. Marina Johnson, IndyStar, 21 Nov. 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 28 Nov. 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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