overheat

verb

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

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.
According to an email to residents, a fire pump motor overheated and burst into flames that day. Suzanne Le Mignot, CBS News, 18 Dec. 2025 Data centers use water, primarily for the evaporative cooling of computers, to keep them from overheating, much like fans do on laptops. Katie Wiseman, IndyStar, 17 Dec. 2025 The microwave filter is crucial for protecting your microwave's internal parts from gunk getting stuck or the fans from overheating. Daley Quinn, Southern Living, 16 Dec. 2025 For instance, these deerskin driving gloves by Paul Stuart, which feature perforated detailing and open panels at the knuckles to ensure that hands won’t overheat while comfortably gripping a wood-grain steering wheel. Eric Twardzik, Robb Report, 15 Dec. 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 21 Dec. 2025.

More from Merriam-Webster on overheat

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!