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in some classifications considered a superphylum or a subkingdom; comprises flagellates; ciliates; sporozoans; amoebas; foraminifers

in some classifications considered a superphylum or a subkingdom; comprises flagellates; ciliates; sporozoans; amoebas; foraminifers

of Protozoon

A subkingdom consisting of unicellular organisms that are the simplest in the animal kingdom. Most are free living. They range in size from submicroscopic to macroscopic. Protozoa are divided into seven phyla: SARCOMASTIGOPHORA; Labyrinthomorpha, APICOMPLEXA; MICROSPORA; Ascetospora, Myxozoa, and CILIOPHORA.

A subkingdom of animals, including all the unicellular animal organisms. They consist of a single cell or of an aggregation of non-differentiated cells, loosely held together and not forming tissues; distinguished from the Metazaa which include all other animals. The Protozoa are divided into four classes: Sarcodina, Mastigophora.Sporozoa, and Infusoria.

The lowest class of animalcules, which are all of the simplest type of organization.

pl. of protozoan. A class of unicellular animal organisms.

The lowest subdivision or phylum of the animal kingdom, consisting always of a single cell. It includes many species pathogenic to man. [Gr.]