geothermy /ˈd͡ʒi.oʊˌθɜɹ.mi/ noun3 •The heat produced by the natural processes of the Earth, including heat from the undercrust, plate tectonics, volcanism, and other sources. •The process and practice of harvesting heat produced by the Earth to be used as an energy source. •The study of heat produced naturally by the Earth, usually considered a subdiscipline of geophysics.However, in geothermy, as in any other area of geophysics, it is often necessary to solve an inverse problem. — 1978 formsgeothermies
