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

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

Two firefighters were taken to a hospital with apparent heat exhaustion, but are expected to make a full recovery. — Harriet Ramos, Fort Worth Star-Telegram, 16 July 2026

If those warnings are ignored and someone stays in the same conditions, heat exhaustion can escalate into heat stroke, Rau said. — Gabby Sartori, USA Today, 14 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