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

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

Jessica Barlow, Kaiser Permanente doctor of Emergency Medicine, provided the Sacramento Bee with the best ways to keep cool at the fair and tips to avoid heat exhaustion. — Veronica Fernandez-Alvarado updated July 17, Sacbee.com, 17 July 2026

Part of this routine is common sense to prevent heat exhaustion; however, much of it is based on horticultural science. — Mary Marlowe Leverette, Southern Living, 17 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