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

South Florida residents should take the necessary precautions to avoid heat exhaustion and heat illness. — Lissette Gonzalez, CBS News, 30 July 2026

Heat illness includes a spectrum of conditions ranging from heat cramps and heat exhaustion to heat stroke, a life-threatening medical emergency. — Sweta Chakraborty, Forbes.com, 28 July 2026

For precaution, the weather service advises anyone spending time outdoors to know the symptoms of heat exhaustion, which include dizziness, thirst, nausea, heavy sweating and weakness. — Ruth Abramovitz, Sun Sentinel, 20 July 2026

Several passengers were treated for heat exhaustion and difficulty breathing, ABC7 reported, citing fire officials. — Andrew Khouri, Los Angeles Times, 19 July 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