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

Learn to identify the warning signs of heat exhaustion and heat stroke. —Ca Weather Bot, Sacbee.com, 11 May 2026

Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. —Doyle Rice, USA Today, 11 May 2026

In some cases, people can experience heat exhaustion and have muscle cramps, nausea, weakness and cold or clammy skin, according to the Centers for Disease Control and Prevention. —Hali Smith, Idaho Statesman, 8 May 2026

As this unseasonable heat returns, the National Weather Service is urging residents in South Florida to take necessary precautions to avoid heat illnesses and heat exhaustion. —Lissette Gonzalez, CBS News, 6 May 2026

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