Definition of "hyperthermia"

hyperthermia

/ˌhaɪpə(ɹ)ˈθɜː(ɹ)miə/

noun
countable and uncountable, plural hyperthermias
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.
  Quotations
  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.
  2020, Kim Stanley Robinson, The Ministry for the Future‎, Little, Brown Book Group
2. (medicine) The therapeutic application of heat to a patient, especially as treatment to cancer.