heat·​er | \ ˈhē-tər How to pronounce heater (audio) \

Definition of heater

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 Aikoper packs multiple features into this 2-foot-tall oscillating ceramic heater. Erin Johnson, Better Homes & Gardens, 5 Oct. 2021 The Delta was able to power that small heater for just 90 minutes before the battery drained. Jim Rossman, Dallas News, 17 Feb. 2021 We have been taught that getting rid of the old gas-tank hot water heater and replacing it with a gas tankless is a more efficient use of energy. Los Angeles Times, 13 Sep. 2021 Instantly warm up any room in your home with this plug-in heater. NOLA.com, 1 Feb. 2021 The fabric is thoroughly varnished, and again passed through the heater. Mark Fischetti, Scientific American, 19 July 2021 Day two of the Valorant Masters event in Reykjavik, Iceland, was slated to be a heater. Washington Post, 26 May 2021 Brands include SunGlow, SunPak, Patio Comfort, Bromic, Twin Eagles, Lynx Pyramid-style propane heaters: This is a novelty heater with an interesting design and most of the heat goes up. oregonlive, 9 May 2021 Late in our first winter there, our hot water heater conked out. David Howard, Popular Mechanics, 11 Aug. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heater.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of heater

15th century, in the meaning defined at sense 1

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Buying Guide

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Time Traveler for heater

Time Traveler

The first known use of heater was in the 15th century

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Dictionary Entries Near heater

heat equator


heater car

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Statistics for heater

Last Updated

9 Oct 2021

Cite this Entry

“Heater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heater. Accessed 18 Oct. 2021.

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More Definitions for heater



English Language Learners Definition of heater

: a machine that heats water or air


heat·​er | \ ˈhē-tər How to pronounce heater (audio) \

Kids Definition of heater

: a device for heating

More from Merriam-Webster on heater

Nglish: Translation of heater for Spanish Speakers


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