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.
After sweeping the heater's interior, wipe it out with a damp cloth, if needed. Jolie Kerr, Better Homes & Gardens, 20 May 2025 Aware of the righty’s heater, Vivas simply strived for contact. Gary Phillips, New York Daily News, 19 May 2025 The radioisotope power generators that keep them running gradually weaken each year, forcing NASA to recently shut down instruments and heaters to conserve energy in order to push the spacecrafts' systems beyond their limits. Victoria Corless, Space.com, 15 May 2025 Even as the weather warms up, an outdoor living space is hardly complete without heaters or fire pits to keep you cozy during the chillier early spring months. Nashia Baker, Architectural Digest, 13 May 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 3 Jun. 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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