/ Dictionary / Index F Fiona: Meaning and Definition of Find definitions for: Fi•o•na Pronunciation: (fē-ō'nu), [key] — n. a female given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. F.I.O. Fionn Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language