/ Dictionary / Index F filter paper: Meaning and Definition of Find definitions for: fil'ter pa"per Pronunciation: [key] porous paper used in filtering. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. filter feeder filter tip Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language