geothermal energy geothermal • geothermally · · · Info · Definitions · Characters · · geothermal energy · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) energy derived from the heat in the interior of the earth. Synonyms: geothermal energy. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079