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#0excludeGlossary refers to a significant medical illness caused by the body’s inability to cope with a specific heat load, and it includes heat cramps, heat exhaustion, heat syncope, and heat stroke.
Merriam-Webster Online Dictionary
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
Heat Exhaustion (Wiktionary)
English
Noun
heat exhaustion (uncountable)
- An illness caused by overheating and excessive sweating, characterised by nausea, headache, thirst, weakness, and high body temperature; prognosis is good if cooling and hydration are pursued promptly.
- Hypernym: condition
- Coordinate term: heat stroke (more severe)
See also
Read MoreOverheating, Heat Stress, Thermal Fatigue, Heat Prostration, Hyperthermic Exhaustion