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Related to Protozoan: sporozoan, Protozoan infections


1. of or pertaining to protozoa.
2. an organism belonging to the Protozoa.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


1. A member of the phylum Protozoa. Synonym(s): protozoon
2. Relating to protozoa. Synonym(s): protozoal
Farlex Partner Medical Dictionary © Farlex 2012


(prō′tə-zō′ən) also


n. pl. proto·zoans or proto·zoa (-zō′ə) also proto·zoons
Any of numerous chiefly single-celled eukaryotic organisms, most of which move about freely and ingest food, including the amoebas, ciliates, flagellates, and apicomplexans. Protozoans along with certain algae, oomycetes, and some other groups make up the protists.

pro′to·zo′an, pro′to·zo′al, pro′to·zo′ic adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


1. A member of the phylum Protozoa.
Synonym(s): protozoon.
2. Relating to protozoa.
Synonym(s): protozoal.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


any member of the phylum Protozoa (sometimes regarded as a subkingdom of the animal kingdom), including unicellular or acellular organisms. The members of the group feed as HOLOPHYTES, SAPROPHYTES or in a HOLOZOIC manner, move by means of FLAGELLA, CILIA or PSEUDOPODIA, and reproduce by FISSION or CONJUGATION.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Protozoan (plural, protozoa)

A single-celled, usually microscopic organism, such as B. coli, that is eukaryotic and, therefore, different from bacteria (prokaryotic).
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Incidence of intestinal protozoan parasites of man in the twin cities of Rawalpindi-Islamabad.
gondii will only be observed in peripheral venous blood samples in cases of parasitemia, i.e., when protozoan dissemination or passage occurs in the blood.
KEY WORDS: Endo-parasites, Prevalence, Vicinity, protozoan parasites, Helminth parasites, Hypoproteinaemia, Mortality, Growth, Grazing, Pasture
Among the protozoan parasites, Entamoeba histolytica/dispar and Blastocystis hominis were detected in 4 and among the helminths, Ancylostoma duodenale in 1 in male and among females Giardia lamblia in 5 and Ancylostoma duodenale in 1.
Finally, analysis of variance "ANOVA" of the two categories, protozoan parasites and coliform bacteria had been achieved to obtain significant differences, using the statistical SPSS-program.
Worm and protozoan infections constitute 12% of the total disease burden in children of age 5-10.
Therefore we performed a study to ascertain the presence of protozoan parasites in a variety of water bodies in a rural setting using the limited resources available.
The FLB uptake rate was calculated by regression of the linear portion of the curve of the average number of FLB per protozoan cell versus time.
Protozoan density was estimated from a 1-mL sample, after fixation with 5% formalin, using a Sedgewick-Rafter counting chamber at 5 x magnification.
Trypanosomiasis, or sleeping sickness, is caused by a protozoan (single celled) parasite, carried by tsetse flies.
The infection doesn't cause symptoms because the protozoan cysts are dormant.
Abstract Leishmaniasis is the result of infection with intracellular protozoan parasites belonging to the genus Leishmania.