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From New Latin, from Ancient Greek ὑπέρ (hupér, “over”) + θέρμη (thérmē, “heat”) + -ία (-ía). By surface analysis, hyper- + -therm + -ia.
Etymology from Wiktionary, CC BY-SA 4.0.
hyperthermia
Today it means: 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. Full definition →