: 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
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.
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
: 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