heat·stroke | \ˈhēt-ˌstrōk \

Definition of heatstroke 

: a life-threatening condition marked especially by cessation of sweating, extremely high body temperature, and collapse that results from prolonged exposure to high temperature — compare heat exhaustion, sunstroke

Examples of heatstroke in a Sentence

Recent Examples on the Web

The danger of leaving a child in a car Scientists can't predict when a child will have a heatstroke, according to ASU. Lauren Castle, azcentral, "Even in the shade, hot cars can quickly become lethal for children, study shows," 20 June 2018 In the Baltimore area, Towson offensive lineman Gavin Class (St. Paul’s) suffered from heatstroke during a summer practice in 2013 and collapsed. Edward Lee, baltimoresun.com, "Maryland offensive lineman Jordan McNair (McDonogh) dies two weeks after collapsing in team workout," 13 June 2018 There have been 14 child vehicular heatstroke deaths in 2018. Raisa Habersham, ajc, "'Save my baby:' 7-month-old dies in hot car in South Georgia," 19 June 2018 Hot weather can be dangerous for your furry friends in a number of ways, from causing heatstroke to injuring paw pads. Bethany Ao, Philly.com, "How to keep your dogs and cats cool when it's hot," 28 June 2018 Vehicular heatstroke deaths increased dramatically in the mid-1990s as states began mandating that car seats be placed in the back seat to avoid harm from front-seat air bags. Ellen Byron, WSJ, "Long Efforts to Stop Hot-Car Deaths," 2 May 2018 The small dog died of heatstroke on the way to a veterinary hospital. Sophia Eppolito, BostonGlobe.com, "Chihuahua left in dog carrier dies of heatstroke," 11 July 2018 Pediatric vehicular heatstroke killed 742 children between 1998 and 2017, the safety council found. Washington Post, "Police: Oregon toddler dies after being left in hot car," 22 June 2018 The signs of heatstroke include heavy panting, glazed eyes, a rapid heartbeat, difficulty breathing, excessive thirst, lethargy, dizziness, lack of coordination, profuse salivation, vomiting, fever, seizures and unconsciousness. Cathy M. Rosenthal, San Antonio Express-News, "Tips to keep your pooch safe and healthy this summer," 22 June 2018

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

1874, in the meaning defined above

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Last Updated

8 Oct 2018

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The first known use of heatstroke was in 1874

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English Language Learners Definition of heatstroke

medical : a serious condition that happens when someone has been in high temperatures for a long time and that causes a person to stop sweating, have a very high body temperature, and become exhausted or unconscious


heat·stroke | \ˈhēt-ˌstrōk \

Medical Definition of heatstroke 

: a life-threatening condition characterized by cessation of sweating with inadequate elimination of body heat, extremely high temperature, rapid pulse, hot dry skin, flaccid muscles, delirium, collapse, and coma and resulting from prolonged exposure to high environmental temperature which causes a dysfunction of the temperature-regulating mechanism of the body — see sunstroke — compare heat exhaustion

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