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

Here are the symptoms to watch for: Cramping Fatigue Diarrhea Dizziness Headache Irritability Coordination problems Nausea Vomiting Fainting Weakness What's the difference between heatstroke and heat exhaustion? —Marley Malenfant, Austin American Statesman, 2 July 2025

Signs of heat exhaustion can include heavy sweating, cold or clammy skin, a fast or weak pulse, and fainting, while heat stroke can include an excessively high body temperature, hot skin, confusion, and fainting. —Staff Author, Travel + Leisure, 2 July 2025

Be alert to warning signs: Educate yourself about the signs and symptoms of heat exhaustion and heat stroke. —Nc Weather Bot, Charlotte Observer, 26 June 2025

Early cooling is critical, as untreated heat exhaustion can quickly turn life-threatening. —Julia Ries, Health, 26 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