hyperthermia

1. (pathology) The condition of having an abnormally high body temperature caused by a failure of the heat-regulating mechanisms of the body to deal with the heat coming from the environment.Examples: "Autopsy results revealed that Braydon was generally malnourished and thin. His cause of death was hyperthermia due to the extreme heat, which would have “caused extreme discomfort and difficulty breathing as he died.”"; "Hyperthermia, that's just a word. The reality is different. You can't breathe. Sweating doesn't work. You're being roasted, like meat in an oven, and you can feel that."Synonyms: heatstrokeAntonyms: hypothermiacountableuncountable

2. (medicine) The therapeutic application of heat to a patient, especially as treatment to cancer.Synonyms: thermotherapycountableuncountable