hypothermal
(hī′pō t̸hʉr′məl, -pə-)
adjective
- tepid or lukewarm
- of or characterized by hypothermia
- produced in a temperature range of 300°C to 500°C: said of certain mineral deposits
See hypothermal in American Heritage Dictionary 4
adjective Of, relating to, or being mineral deposits formed at great depths and high temperatures.