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, 1 Sep. 2025

More than 13,000 people in Alaska's Inside Passage were told to keep an eye out for symptoms of heat stroke and heat exhaustion on Thursday as National Weather Service (NWS) meteorologists in Juneau issued a heat advisory for Ketchikan and surrounding areas. —Anna Skinner, MSNBC Newsweek, 28 Aug. 2025

One afternoon, George’s radio flared with chatter of medics and heat exhaustion. —River Selby august 25, Literary Hub, 25 Aug. 2025

One hiker suffered heat exhaustion, one dog died and two other dogs were carried out, said Sheriff’s Sgt. —Sierra Van Der Brug, Oc Register, 22 Aug. 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