heat stroke

See also: heatstroke

English

heat stroke (countable and uncountable, plural heat strokes)

(medicine, countable or uncountable) An illness caused by overheating a person or animal beyond its body's capacity to regulate internal temperature.

Heat stroke is normally used as a countable noun, especially in a medical context.
- I'm in the hospital because I had a heat stroke today.
- It was so hot at the race that four runners and three onlookers had a heat stroke.
But in some contexts, especially more informal English, it can be used in an uncountable way.
- I was feeling dizzy and weak earlier, but I'm okay now, so I think it was just a touch of heat stroke.
- If it gets any hotter in there, he might move from mild hyperthermia to outright heat stroke.

severe hyperthermia