WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / G / geothermal geothermal adjective /dʒioʊθɜrməl/ 4 syllables 10 letters Scrabble 16 WWF 18 Definitions adjective of or relating to the heat in the interior of the earth geothermic Look “geothermal” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →