heat exhaustion

noun

: a condition marked by weakness, nausea, dizziness, and profuse sweating that results from physical exertion in a hot environment

called also heat prostration

compare heatstroke

Examples of heat exhaustion in a Sentence

Recent Examples on the Web

Learn to identify the warning signs of heat exhaustion and heat stroke. —Ca Weather Bot, Sacbee.com, 9 June 2026

Educate yourself about the signs and symptoms of heat exhaustion and heat stroke. —Bay Area Weather Report, Mercury News, 9 June 2026

In 2017, professional soccer player Rachel Daly collapsed due to heat exhaustion during a match in Houston, despite additional water breaks during the game. —Rebecca Hersher, NPR, 4 June 2026

Though some breeds need regular exercise, owners should still avoid walking their dogs when temperatures exceed a certain level to prevent paw damage, sunburn, heat exhaustion, and more. —Rachel McRady, PEOPLE, 1 June 2026

Word History

First Known Use

1861, in the meaning defined above

Rhymes for heat exhaustion

• faustian

Kids Definition

heat exhaustion

noun

: a condition marked by weakness, nausea, dizziness, and much sweating that results from physical exertion in a hot environment

called also heat prostration

compare heat stroke

Medical Definition

heat exhaustion

noun

: a condition characterized by faintness or fainting, palpitations, nausea, vomiting, headache, and profuse sweating and resulting from physical exertion in a hot environment

called also heat prostration

compare heatstroke