/ Dictionary / Index F fldxt: Meaning and Definition of Find definitions for: fldxt Pronunciation: [key] fluidextract. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fl dr flea 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