geothermic

/ˌdʒiːoʊˈθɜːrmɪk/
adjective
  1. Relating to the heat inside the Earth (same as geothermal).
    • Geothermic activity is common in regions with volcanoes.
    • The geothermic gradient describes how temperature increases with depth underground.
    • Engineers are studying geothermic resources to develop new power plants.
Synonyms
What does "geothermic" mean? | whatsthatwordmean | whatsthatwordmean