Simple Definition of heat exhaustion

from our Learner's Dictionary

heat exhaustion

noun

medical : a condition that happens when someone is too active in extremely hot conditions and that causes a person to sweat and feel very weak, dizzy, etc.

called also (chiefly US) heat prostration

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“Heat exhaustion.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/heat%20exhaustion. Accessed 15 Apr. 2026.

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Britannica.com: Encyclopedia article about heat exhaustion

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