/ Dictionary / Index W willemite: Meaning and Definition of Find definitions for: wil•lem•ite Pronunciation: (wil'u-mīt"), [key] — n. a mineral, a zinc silicate, ZnSiO, sometimes containing manganese, occurring in prismatic crystals or granular masses, usually greenish, sometimes white, brown, or red: a minor ore of zinc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Willem I Willemstad Related Content Daily Word Quiz: verdant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language