noun
hypothermia
hy-puh-THUR-mee-uh/ˌhaɪpəˈθɜːrmiə/
Dangerously low body temperature.
The patient needs urgent warming for hypothermia, with a body temperature of thirty-two degrees.

Etymology
The pieces name a condition of insufficient heat. In this medical use, “under” refers to body temperature falling below its normal level.
In context
sleeping whether you're outside whether you're inside but it normally covers in a range if the temperature starts to drop below that right then you suffer from a condition illness hypothermia
More examples
- Confusion and intense shivering can be signs of hypothermia.
- The emergency team treats the swimmer for hypothermia.
- Older adults can develop hypothermia even indoors if their homes are too cold.
Forms
hypothermia
hypothermic adjective — Having a dangerously low body temperature.