[ goh-thahyt, gœ-tahyt ]
/ ˈgoʊ θaɪt, ˈgœ taɪt /


a very common mineral, iron hydroxide, HFeO2, occurring in crystals, but more commonly in yellow or brown earthy masses: an ore of iron.

Origin of goethite

1815–25; named after Goethe; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for goethite



/ (ˈɡəʊθaɪt, German ˈɡøːtiːt) /


a black, brown, or yellow mineral consisting of hydrated iron oxide in the form of orthorhombic crystals or fibrous masses. Formula: FeO(OH)

Word Origin for goethite

C19: named after Goethe
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012