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

Be alert to warning signs: Educate yourself about the signs and symptoms of heat exhaustion and heat stroke. —Star-Telegram Weather Bot, Fort Worth Star-Telegram, 6 Aug. 2025

Recognize early indicators: Learn to identify the warning signs of heat exhaustion and heat stroke. —Ca Weather Bot, Sacbee.com, 5 Aug. 2025

In Arizona, first responders rescued at least three hikers experiencing heat exhaustion on mountain trails in Scottsdale and Phoenix on Saturday. —Marlene Lenthang, NBC news, 28 July 2025

Find the right time: Consider rescheduling strenuous activities to early morning or evening if possible. Recognize warning signs: Familiarize yourself with symptoms of heat exhaustion and heat stroke. —Nc Weather Bot, Charlotte Observer, 25 July 2025

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