overheat

verb

over·​heat ˌō-vər-ˈhēt How to pronounce overheat (audio)
overheated; overheating; overheats

transitive verb

1
: to heat to excess
2
: to stimulate or agitate unduly

intransitive verb

: to become heated beyond a safe or desirable point

Examples of overheat in a Sentence

I overheated the food in the microwave. Be careful not to overheat the engine.
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.
Avoid hiking in extremely hot temperatures, as dogs are more susceptible to overheating. Liz O'Connell, MSNBC Newsweek, 14 Oct. 2025 These storms can also damage key technological infrastructure, such as by interfering with the flow of electricity in the power grid and causing transformers to overheat and fail. Mojtaba Akhavan-Tafti, The Conversation, 13 Oct. 2025 The linen-blend material offers just the right amount of insulation without overheating, and is 100% machine washable for breezy laundry days. Mariana Best, Better Homes & Gardens, 10 Oct. 2025 The canvas material kept feet from overheating while running errands or commuting, and the soles didn’t show any signs of wear, even after multiple outings. Averi Baudler, PEOPLE, 10 Oct. 2025 See All Example Sentences for overheat

Word History

First Known Use

14th century, in the meaning defined at transitive sense 1

Time Traveler
The first known use of overheat was in the 14th century

Browse Nearby Words

Cite this Entry

“Overheat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/overheat. Accessed 18 Oct. 2025.

More from Merriam-Webster on overheat

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