Definition of geothermal in English:

geothermal

Syllabification: ge·o·ther·mal
Pronunciation: /ˌjēōˈTHərməl
 
/
(also geothermic /-ˈTHərmik/)

adjective

Of, relating to, or produced by the internal heat of the earth: some 70% of Iceland’s energy needs are met from geothermal sources
More example sentences
  • The internal, or geothermal, heat from within the Earth is responsible for the fact that temperature increases with depth.
  • High geothermal activity and high heat flow at shallow levels in the crust are most likely due to aqueous fluids.
  • These rocks were later affected by low-grade metamorphism under high geothermal gradients.

Definition of geothermal in:

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Word of the day retroflex
Pronunciation: ˈretrəˌfleks
adjective
turned backward