adj
geothermal
adj
1
Relating to heat that comes from deep inside the earth.
"Iceland generates much of its electricity from geothermal energy."
"The spa is heated using a natural geothermal spring."
How to Use Geothermal
Learner’s notesIn plain EnglishDescribes energy or heat drawn from the natural warmth deep underground.
Common pairings
geothermal energy
geothermal heating
geothermal power plant
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Etymology
From geo- ("earth") plus thermal ("relating to heat").