/ Dictionary / Index B bismuthinite: Meaning and Definition of Find definitions for: bis•muth•in•ite Pronunciation: (biz-muth'u-nīt", biz'mu-thu-), [key] — n. a mineral, bismuth sulfide, BiS, occurring in lead-gray masses: an ore of bismuth. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bismuthine bismuthous Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language