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

Find the right time: Consider rescheduling strenuous activities to early morning or evening if possible. Recognize warning signs: Know the signs and symptoms of heat exhaustion and heat stroke. —Ca Weather Bot, Sacbee.com, 9 June 2025

One of his two companions collapsed from heat exhaustion after walking nearly 70 miles and had to return home by bus. —Zia Ur-Rehman Asim Hafeez, New York Times, 30 May 2025

One firefighter was taken to the hospital with heat exhaustion and a back injury. —Milena Malaver, Miami Herald, 30 May 2025

The Centers for Disease Control and Prevention advises residents in areas with excessive heat to wear light clothing, drink lots of water, use their air conditioning and avoid from exerting themselves outside in order to prevent heat exhaustion or heat stroke. —Janet Loehrke, USA Today, 19 May 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