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heatstroke

[heet-strohk]
noun
  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.
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Origin of heatstroke

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

British Dictionary definitions for heat stroke

heatstroke

noun
  1. a condition resulting from prolonged exposure to intense heat, characterized by high fever and in severe cases convulsions and comaSee sunstroke
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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

heat stroke in Medicine

heat stroke

n.
  1. A severe condition caused by impairment of the body's temperature-regulating abilities, resulting from prolonged exposure to excessive heat and characterized by cessation of sweating, severe headache, high fever, hot dry skin, and, in serious cases, collapse and coma.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.