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

As with any heat wave, heat stroke, heat exhaustion and heat cramps are common dangers, Kines said. —Doyle Rice, USA Today, 21 Mar. 2026

Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. —Ca Weather Bot, Sacbee.com, 21 Mar. 2026

More severe effects include heat exhaustion or heat stroke, a life-threatening condition when the body's temperature rises above 104 degrees and cooling mechanisms fail. —Mary Kekatos, ABC News, 20 Mar. 2026

Know the warning signs of heat exhaustion, which include headache, nausea, dizziness, thirst, sweating and an elevated body temperature. —Hannah Dreyfus, AZCentral.com, 19 Mar. 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