Breadcrumb Home > Thesaurus > P Synonyms of protozoan Find synonyms for: Noun1. protozoan, protozoon, protoctistusage: any of diverse minute acellular or unicellular organisms usually nonphotosyntheticAdjective1. protozoal, protozoan, protozoicusage: of or relating to the ProtozoaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of protozoan (Dictionary) ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language