Dictionary 1. (n.) The quality of being porous.2. (n.) The open parts; the interstices of anything. Thesaurus bolter clarifier cradle cribble cribriformity cribrosity filter grate grating honeycomb lixiviator net percolator porosity porousness purifier refiner refinery riddle rocker screen sieve sievelikeness sifter sorter sponge strainer winnow winnowing basket winnowing fan winnowing machine |