/ Dictionary / Index S strontianite: Meaning and Definition of Find definitions for: stron•ti•an•ite Pronunciation: (stron'shē-u-nīt", -shu-nīt"), [key] — n. a mineral, strontium carbonate, SrCO, occurring in radiating, fibrous, or granular aggregates and crystals, varying from white to yellow and pale green: a minor ore of strontium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: strontianite (Thesaurus) strontian strontium Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language