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

People most at risk for heat exhaustion are the elderly, those with high blood pressure, and individuals working or exercising in the heat. —Brandi D. Addison, jsonline.com, 3 Oct. 2025

In summer 2025, gas stations across the state ran videos at lottery ticket vending machines and checkout counters telling people how to recognize signs of heat exhaustion and find cooling centers. —Joan Meiners, AZCentral.com, 1 Oct. 2025

During search and rescue operations, one firefighter was treated and then taken to a hospital for heat exhaustion. —Robert A. Cronkleton, Kansas City Star, 30 Sep. 2025

Learn to identify the warning signs of heat exhaustion and heat stroke. —Bay Area Weather Report, Mercury News, 23 Sep. 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