noun, plural pro·to·zo·ans, (especially collectively) pro·to·zo·a [proh-tuh-zoh-uh] /ˌproʊ təˈzoʊ ə/.
Origin of protozoan
Examples from the Web for protozoan
Of almost equal value have been the researches upon the protozoan forms of animal life, as causes of disease.The Evolution of Modern Medicine|William Osler
Inside this snail's gut there is a protozoan that lives off the snail's ingested food.Planet of the Damned|Harry Harrison
This disease is caused by a Protozoan parasite, a trypanosome, which is transmitted from one host to another by the tsetse-fly.Insects and Diseases|Rennie W. Doane
The shelly agglomerates of these Protozoan Rhizopods constitute now very important rocks.The World Before the Deluge|Louis Figuier
Although the alg are useful guests, when they become too numerous the protozoan devours them.Disease and Its Causes|William Thomas Councilman