geothermal
adjective/ˌdʒiːoʊˈθɜːrməl/
Frequency rank: #10,842 of 20,003 in the WORDED list (wordfreq data)
Meaning
relating to heat produced within the Earth.

Example sentence
The power plant generates electricity using geothermal energy from deep within the Earth.
Synonyms & related words
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