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. —Nc Weather Bot, Charlotte Observer, 24 June 2025

Two of the most significant health risks associated with high temperatures are heat exhaustion and heatstroke. —Tom Gavin, EverydayHealth.com, 23 June 2025

Signs of heat exhaustion or heatstroke include confusion, lightheadedness or nausea. —Irit Skulnik, Baltimore Sun, 23 June 2025

The weather service warned that the temperatures could cause health issues such as heat exhaustion and heat stroke, especially for at-risk populations, and urged people to stay hydrated and avoid strenuous activity during the hottest part of the day. —Grace Toohey, Los Angeles Times, 16 June 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