/ Dictionary / Index S stibnite: Meaning and Definition of Find definitions for: stib•nite Pronunciation: (stib'nīt), [key] — n. a soft mineral, antimony sulfide, SbS, lead-gray in color with a metallic luster, occurring in crystals, often acicular, or in bladed masses: the most important ore of antimony. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: stibnite (Thesaurus) stibium stich 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