English

Definition of geothermal adjective from the Oxford Advanced Learner's Dictionary

 

geothermal

 adjective
adjective
BrE BrE//ˌdʒiːəʊˈθɜːml//
 
; NAmE NAmE//ˌdʒiːoʊˈθɜːrml//
 
(geology)
 
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connected with the natural heat of rock deep in the ground geothermal energy
See the Oxford Advanced American Dictionary entry: geothermal