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

As the body temperature rises beyond the norm of 98.6 degrees, this can bring on muscle pain and spasms known as heat cramps, or lead to what’s called heat exhaustion: cramps accompanied by dizziness, nausea, headaches and more. Linda Searing, Washington Post, "The Big Number: Extreme heat kills 618 people every year," 9 July 2018 Multiple firefighters suffered heat exhaustion while fighting a three-alarm fire that destroyed a former pub in Hanson Thursday, officials said. Jackson Cote, BostonGlobe.com, "Former local pub destroyed, firefighters treated for heat exhaustion after Hanson fire," 6 July 2018 Austin Flake was indicted on 21 counts of animal cruelty in connection with a 2014 incident in which 21 dogs died of heat exhaustion at an East Valley kennel. Ronald J. Hansen, azcentral, "Sen. Jeff Flake hopes Republicans in Congress start talking back to Trump after primaries," 27 May 2018 The exact cause of death was not released, but Frank’s family believes heat exhaustion may have led to her passing. Katherine Lam, Fox News, "US Postal worker found dead in California after delivering mail in extreme heat, family says," 10 July 2018 Perhaps this is a good time to revisit the signs of heat exhaustion. Alli Harvey, Anchorage Daily News, "Blast of heat reminds Alaskans how to keep their cool while playing hard," 9 July 2018 At least one woman received medical attention due to heat exhaustion. Zahria Rogers, The Courier-Journal, "Immigration rally splits as group calls out Fischer over 'sanctuary city' policy," 30 June 2018 Three firefighters suffered heat exhaustion and were taken to Howard County General Hospital for a precautionary evaluation. Christina Tkacik, Howard County Times, "Lightning starts house fire in Howard County; three firefighters suffer heat exhaustion," 4 July 2018 What happens in the transition from heat exhaustion to heat stroke? Katherine Harmon, Scientific American, "How Does a Heat Wave Affect the Human Body?," 23 July 2010

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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Statistics for heat exhaustion

Last Updated

1 Oct 2018

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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

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