PERCOLATION Scrabble 15 Words With Friends 19 Definition noun the slow passage of a liquid through a filtering medium. — synonyms: infiltration noun the act of making coffee in a percolator. noun the filtration of a liquid for extraction or purification. See all 1077 words you can make from PERCOLATION → 11-letter words Words starting with P Words ending with N ← Unscramble different letters