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.
Mahomes was on a heater in the opening half. Kansas City Star, 7 Oct. 2025 Adding a patio heater, like the Cuisinart Portable Tabletop Patio Heater, is the secret to making your backyard the coziest place to relax this fall. Molly Blanco, Better Homes & Gardens, 7 Oct. 2025 Use a standard 20-pound propane tank and the heater will run for hours. Christopher Murray May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 7 Oct. 2025 The room heater and ventilation system were also activated and were found to be on at a high temperature. Cara Lynn Shultz, PEOPLE, 7 Oct. 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

Browse Nearby Words

Cite this Entry

“Heater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heater. Accessed 8 Oct. 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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