/ Dictionary / Index F fluorspar: Meaning and Definition of Find definitions for: flu•or•spar Pronunciation: (fl'ôr-spär", -ur-), [key] — n. Mineral. fluorite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fluorspar (Thesaurus) fluorouracil fluosilicate Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language