/ Dictionary / Index F fluor: Meaning and Definition of Find definitions for: flu•or Pronunciation: (fl'ôr, -ur), [key] — n. Mineral. fluorite. fluor- Pronunciation: [key] var. ofbefore a vowel: fluorene; fluoric. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fluor (Thesaurus) fluophosphoric acid fluorapatite Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language