heatstroke
noun
heat·stroke ˈhēt-ˌstrōk 
: 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
Example Sentences
Recent Examples on the Web Exertional heatstroke, on the other hand, occurs when the core body temperature exceeds 105 degrees. 
Ethan Ehrenhaft, Baltimore Sun, 24 Aug. 2022 According to the American Council on Health and Science, at least 30 college football players died from heatstroke between 2000 and 2018. Ethan Ehrenhaft, Baltimore Sun, 24 Aug. 2022 Dehydration is extremely serious and can lead to severe, potentially deadly complications like heatstroke and seizures. Josh Thompson, Forbes, 15 Aug. 2022 Unlike heat exhaustion, where a person can recover and continue on, given some time, a heatstroke requires medical intervention. Matt Jancer, Wired, 10 Aug. 2022 Official reports sometimes list other conditions, like a heart attack, rather than the heatstroke that led to the illness or injury. Sarah Todd, Quartz, 4 Aug. 2022 This is when the really bad stuff happens: heat cramps, heat exhaustion, heatstroke. Jacob Stern, The Atlantic, 3 Aug. 2022 At this level, heat cramps or heat exhaustion is likely, and heatstroke is possible with prolonged exposure and/or physical activity. Jennifer Gray, CNN, 2 Aug. 2022 Both are signs of heatstroke, the most serious and final stage of heat illness. Sarah Trent, Outside Online, 26 July 2022 See More
Ethan Ehrenhaft, Baltimore Sun, 24 Aug. 2022 According to the American Council on Health and Science, at least 30 college football players died from heatstroke between 2000 and 2018. Ethan Ehrenhaft, Baltimore Sun, 24 Aug. 2022 Dehydration is extremely serious and can lead to severe, potentially deadly complications like heatstroke and seizures. Josh Thompson, Forbes, 15 Aug. 2022 Unlike heat exhaustion, where a person can recover and continue on, given some time, a heatstroke requires medical intervention. Matt Jancer, Wired, 10 Aug. 2022 Official reports sometimes list other conditions, like a heart attack, rather than the heatstroke that led to the illness or injury. Sarah Todd, Quartz, 4 Aug. 2022 This is when the really bad stuff happens: heat cramps, heat exhaustion, heatstroke. Jacob Stern, The Atlantic, 3 Aug. 2022 At this level, heat cramps or heat exhaustion is likely, and heatstroke is possible with prolonged exposure and/or physical activity. Jennifer Gray, CNN, 2 Aug. 2022 Both are signs of heatstroke, the most serious and final stage of heat illness. Sarah Trent, Outside Online, 26 July 2022 See More Word History
First Known Use
1874, in the meaning defined above
Medical Definition
heatstroke
noun
heat·stroke ˈhēt-ˌstrōk
: 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