hypothermal

(hī′pō t̸hʉrməl, -pə-)

adjective

  1. tepid or lukewarm
  2. of or characterized by hypothermia
  3. 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.
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