| Clarifier 1. (n.) That which clarifies. 2. (n.) A vessel in which the process of clarification is conducted; as, the clarifier in sugar works. Thesaurus Entries 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 | ![]() |