- protozoan, protozoon - any of diverse minute acellular or unicellular organisms usually nonphotosynthetic
--1 is a kind of phylum; protoctist; phylum; protoctist
--1 is a member of --1 has parts: cytostome
--1 has members:
--1 has particulars:protozoan, protozoon; Sarcodina, class Sarcodina; Ciliata, class Ciliata, Ciliophora, class Ciliophora; Mastigophora, class Mastigophora, Flagellata, class Flagellata; Sporozoa, class Sporozoa