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The lowest of the grand divisions of the animal kingdom.

Of or pertaining to the Protozoa. -- n.

A division of Protozoa, of which Magosphæra is the type. They exist both in a myxopod state, with branched pseudopodia, and in the form of ciliated bodies united in free, spherical colonies.

e substance. Hixley. Contractile vacuole (Zoöl.), a pulsating cavity in the interior of a protozoan, supposed to be excretory in function. There may be one, two, or more.

A form assumed by Protozoa inwhich they become saclike and quiescent. It generally precedes the production of germs. See Encystment.

The ectosarc of protozoan.

Pertaining to, or composed of, entoplasm; as, the entoplastic products of some Protozoa, or the entoplastic modification of the cell protoplasm, by which a nucleus is produced.

zygote an oöspore. In Zoöl., gamete is most commonly used of the sexual cells of certain Protozoa, though also extended to the germ cells of higher forms.

A bud spore; one of the small spores or buds in the reproduction of certain Protozoa, which separate one at a time from the parent cell.

An order of Protozoa, allied to the Rhizopoda, and parasitic in other animals, as in the earthworm, lobster, etc. When adult, they have a small, wormlike body inclosing a nucleus, but without external organs; in one of the young stages, they are amoebiform; -- called also Gregarinida, and Gregarinaria.…

Any disease caused by the entrance, growth, and multiplication of bacteria or protozoans in the body; a germ disease. It may not be contagious.

One of the classes of Protozoa, including a large number of species, all of minute size.

Any of several minute protozoans of the genus Plasmodium (syn. Hæmatozoön) which in their adult condition live in the tissues of mosquitoes of the genus Anopheles (which see) and when transferred to the blood of man, by the bite of the mosquito, produce malaria. The young parasites, or sporozoites, enter the red blood…

o layers, -- the ectoderm and endoderm. The group comprises nearly all animals except the Protozoa.

A small rounded body contained in the nucleus of a cell or a protozoan.

A body, usually spheroidal, in a cell or a protozoan, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may…

An animal having many mouths; -- applied to Protozoa.

A changeable protozoan; an amoeba.

st martyr; protomorphic, primitive in form; protoplast, a primordial organism; prototype, protozoan.

Of or pertaining to the Protozoa.