Geothermal
/ˌdʒiːəʊˈθɜːr.məl/noun
Relating to the heat produced within the Earth.
Did you know?In ancient times, people believed that geothermal springs were gateways to the underworld, connecting them to other realms of existence.
Etymological Timeline
Ancient Greek
Greek
γῆ (gē)
“Earth, land, soil.”
Ancient Greek
Greek
θερμός (thermós)
“Hot, warm, heat.”
14th Century
Latin
geothermia
“Heat from the earth.”
19th Century
English
geothermal
“Pertaining to heat originating from the interior of the Earth.”