/ Dictionary / Index B bismuth: Meaning and Definition of Find definitions for: bis•muth Pronunciation: (biz'muth), [key] — n. Chem. a brittle, grayish-white, red-tinged, metallic element used in the manufacture of fusible alloys and in medicine. Symbol: Bi; at. wt.: 208.980; at. no.: 83. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bismuth (Thesaurus) bismillah* bismuth chromate Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language