heat exhaustion


Definition of heat exhaustion

: a condition marked by weakness, nausea, dizziness, and profuse sweating that results from physical exertion in a hot environment

called also heat prostration

— compare heatstroke

Examples of heat exhaustion in a Sentence

Recent Examples on the Web

The Carolina Tiger Rescue announced Tuesday that Sheba, a female lion that had lived at the facility since 2010, died after severe heat exhaustion caused her organs to fail. Scottie Andrew And Katherine Dillinger, CNN, "Heat proves deadly for a 17-year-old lion at a North Carolina animal park," 25 July 2019 Luckily, heat exhaustion is preventable so long as individuals take precautionary measures. Nicole Blackwood, baltimoresun.com, "5 things you should know about heat exhaustion," 19 July 2019 Left untreated, heat exhaustion can develop into heat stroke, a condition that occurs when the body is unable to control its temperature, in some cases rising above 103 degrees. Marie Fazio, chicagotribune.com, "‘We need everyone to do their part’: Chicago prepares for heat wave," 18 July 2019 Because the fire destroyed many of the trees that once covered the field in shade, the sun had free rein to pound the bleachers amid 95-degree heat, leading to at least four people being treated for heat exhaustion. Los Angeles Times, "Column: Paradise football brings smiles and tears in first game since Camp fire," 25 Aug. 2019 That week, Nowlin took himself to the doctor, who diagnosed him with heat exhaustion and a head injury, according to his worker's compensation records. NBC News, "Heat takes down more UPS workers during hottest summer ever," 22 Aug. 2019 Please take the heat seriously and watch for signs of heat exhaustion. Dallas News, "NBC 5 Forecast: Hottest Weather Yet," 12 Aug. 2019 The thing about heat exhaustion is that its symptoms don’t just strike out of nowhere. Anna Borges, SELF, "How to Spot Heat Exhaustion Because, Wow, It's Freaking Hot Outside," 12 July 2019 Heatstroke is less common, but more dangerous than heat exhaustion. Nina Avramova, CNN, "How your health is at risk during a heatwave," 28 June 2019

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

1861, in the meaning defined above

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Dictionary Entries near heat exhaustion

heater piece


heat exchanger

heat exhaustion




Statistics for heat exhaustion

Last Updated

17 Sep 2019

Look-up Popularity

Time Traveler for heat exhaustion

The first known use of heat exhaustion was in 1861

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More Definitions for heat exhaustion

heat exhaustion


English Language Learners Definition of heat exhaustion

medical : a condition that happens when someone is too active in extremely hot conditions and that causes a person to sweat and feel very weak, dizzy, etc.

heat exhaustion


Medical Definition of heat exhaustion

: a condition characterized by faintness or fainting, palpitations, nausea, vomiting, headache, and profuse sweating and resulting from physical exertion in a hot environment

called also heat prostration

— compare heatstroke

More from Merriam-Webster on heat exhaustion

Britannica.com: Encyclopedia article about heat exhaustion

Comments on heat exhaustion

What made you want to look up heat exhaustion? Please tell us where you read or heard it (including the quote, if possible).


to make a temporary encampment

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