Webster’s Revised Unabridged Dictionary · 1913
Göthite
Gö′thite, or Goe′thite (gẽ′tīt), n. [After the poet Göthe.] (Min.) A hydrous oxide of iron, occurring in prismatic crystals, also massive, with a fibrous, reniform, or stalactitic structure. The color varies from yellowish to blackish brown.