from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of a large group of single-celled, usually microscopic, eukaryotic organisms, such as amoebas, ciliates, flagellates, and sporozoans.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of the diverse group of eukaryotes, of the phylum Protozoa, that are primarily unicellular, existing singly or aggregating into colonies, are usually nonphotosynthetic, and are often classified further into phyla according to their capacity for and means of motility, as by pseudopods, flagella, or cilia.
- adj. Of, pertaining to, or characteristic of a protozoan.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to the protozoa.
from The Century Dictionary and Cyclopedia
- First, lowest, simplest, or most primitive, as an animal; of or pertaining to the Protozoa.
- n. A member of the Protozoa; a protozoön.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of diverse minute acellular or unicellular organisms usually nonphotosynthetic
- adj. of or relating to the Protozoa
From New Latin Protozōa, former subkingdom name : proto- + -zōa, pl. of -zōon, -zoon.(American Heritage® Dictionary of the English Language, Fourth Edition)