[geo.ther.mal] adj [ISV] (1875): of, relating to, or utilizing the heat of the earth's interior; also: produced or permeated by such heat "~ steam" "~ region" -- geo.ther.mal.ly adv
GEOTHERMAL
Meaning of GEOTHERMAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012