over·​heat | \ ˌō-vər-ˈhēt \
overheated; overheating; overheats

Definition of overheat 

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

Dickson says the current mat's overheating issues are preventing that silicon from functioning properly. Jeff Dunn, Ars Technica, "Reports: Apple AirPower still overheating, may be “doomed to failure”," 17 Sep. 2018 The fight with Trump has given Erdoğan a useful scapegoat for Turkey’s economic troubles, though the root causes of the volatility — increased inflation and an overheating borrow-and-spend economy — have little to do with Trump. Jen Kirby, Vox, "Shots fired at the US Embassy in Turkey," 20 Aug. 2018 The batteries were found to be prone to overheating; the planes were returned to service after Boeing designed a new system to encase the batteries to better contain fire and smoke. Barbara Peterson, Condé Nast Traveler, "How Often Do New Airplanes Have Problems?," 2 Nov. 2018 Preston and Pfingston believe this kind of research, looking into better communication devices, biometric bracelets to monitor dehydration and overheating, and GPS locators to better track firefighters could save lives. Karina Bland, azcentral, "New statue to honor Granite Mountain Hotshots 5 years after Yarnell Hill Fire," 20 Apr. 2018 The charger will also protect your devices from surges and features in-device temperature control to keep from overheating. Alexandria Haslam, PCWorld, "The Anker PowerPort 6 Lite 6-port USB hub is $12 today, a savings of $8," 14 Nov. 2018 Investors feared that a tightening labor market and rising wages could push up prices and spur the Federal Reserve to raise interest rates faster than anticipated to keep the economy from overheating. Fortune, "Healthcare Prices to Outpace Inflation for the First Time Since 2010," 15 Feb. 2018 One worry is that the economy could overheat and worker wages and other types of inflation could spike because of all the stimulus from tax cuts and government spending on things such as infrastructure. Adam Shell, USA TODAY, "Trump Bump is down but not out after stock rout," 13 Feb. 2018 Yoga and hot yoga have essentially the same health benefits, but too much of the latter can overheat participants to dangerous levels. USA TODAY, "The biggest exercise fad the year you were born," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'overheat.' 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 overheat

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

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Statistics for overheat

Last Updated

20 Dec 2018

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Time Traveler for overheat

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

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More Definitions for overheat



English Language Learners Definition of overheat

: to become too hot

: to cause (something) to become too hot


over·​heat | \ ˌō-vər-ˈhēt \
overheated; overheating

Kids Definition of overheat

: to heat too much : become too hot The engine overheated.

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More from Merriam-Webster on overheat

Rhyming Dictionary: Words that rhyme with overheat

Spanish Central: Translation of overheat

Nglish: Translation of overheat for Spanish Speakers

Britannica English: Translation of overheat for Arabic Speakers

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