• synonyms


  1. a disturbance of the temperature-regulating mechanisms of the body caused by overexposure to excessive heat, resulting in fever, hot and dry skin, and rapid pulse, sometimes progressing to delirium and coma.
Show More

Origin of heatstroke

First recorded in 1870–75; heat + stroke1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for heatstroke

Historical Examples of heatstroke

  • When a person falls with sunstroke (or heatstroke) he should at once be carried to a cool, shady place.

    Alcohol: A Dangerous and Unnecessary Medicine, How and Why

    Martha M. Allen

  • In hot weather, dizziness is a first warning sign of heat exhaustion, which can lead to heatstroke.

British Dictionary definitions for heatstroke


  1. a condition resulting from prolonged exposure to intense heat, characterized by high fever and in severe cases convulsions and comaSee sunstroke
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012