hyperthermia - definition and synonyms

noun [uncountable]
  1.   From our crowdsourced Open Dictionary
    when one's body temperature is far too high (the opposite of 'hypothermia' when too cold

    Three soldiers died of hyperthermia whilst training in Wales on the hottest day of the year.

    Submitted by Dave or 'Smudge' from United Kingdom on 16/07/2015