a condition characterized by faintness, rapid pulse, nausea, profuse sweating, cool skin, and collapse, caused by prolonged exposure to heat accompanied by loss of adequate fluid and salt from the body.
a condition resulting from exposure to intense heat, characterized by dizziness, abdominal cramp, and prostration Also called heat prostration Compare heatstroke

heat exhaustion n.
A condition caused by exposure to heat, marked by prostration, weakness, and collapse, resulting from unrecognized or unavoidable dehydration. Also called heat prostration.

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