hypothermia
n.n. a dangerous medical condition where your body loses heat too fast and your temperature drops below normal. It usually happens when you stay in very cold weather for too long.
n. a medical condition characterized by a core body temperature below 35 degrees Celsius, typically resulting from prolonged exposure to cold environments.
The hikers suffered from hypothermia after their tent collapsed in the storm.
Even a short time in freezing water can lead to hypothermia if a person is not wearing a dry suit.
Emergency responders must act quickly to treat hypothermia, as the body's metabolic processes slow significantly once the core temperature falls below critical thresholds.
From New Latin, from Ancient Greek ὑπο- (hupo-, “under”) + θέρμη (thérmē, “heat”) + -ία (-ía, “feminine suffix”) . By surface analysis, hypo- + therm- + -ia.