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Velum :: Velum (n.) A delicate funnel-like membrane around the flagellum of certain Infusoria. See Illust. a of Protozoa.

Cyst :: Cyst (n.) A form assumed by Protozoa in which they become saclike and quiescent. It generally precedes the production of germs. See Encystment.

Nucleus :: Nucleus (n.) 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 be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division..

Rhizopoda :: Rhizopoda (n. pl.) An extensive class of Protozoa, including those which have pseudopodia, by means of which they move about and take their food. The principal groups are Lobosa (or Am/bea), Helizoa, Radiolaria, and Foraminifera (or Reticularia). See Protozoa..

Protozoan :: Protozoan (n.) One of the Protozoa.

Sporid :: Spore (n.) One of the parts formed by fission in certain Protozoa. See Spore formation, belw..

Sporozoid :: Sporozoa (n. pl.) An extensive division of parasitic Protozoa, which increase by sporulation. It includes the Gregarinida..

Protozoa :: Protozoa (pl. ) of Protozoo.

Ectoplasm :: Ectoplasm (n.) The ectosarc of protozoan.

Protozoic :: Protozoic (a.) Containing remains of the earliest discovered life of the globe, which included mollusks, radiates and protozoans..

Protozoan :: Protozoan (a.) Of or pertaining to the Protozoa.

Gemma :: Gemma (n.) 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..

Proteus :: Proteus (n.) A changeable protozoan; an amoeba.

Protozoic :: Protozoic (a.) Of or pertaining to the Protozoa.

Protozoon :: Protozoon (n.) One of the Protozoa.

Stomatode :: Stomatode (a.) Having a mouth; -- applied to certain Protozoa.

Radio-flagellata :: Radio-flagellata (n. pl.) A group of Protozoa having both flagella and pseudopodia.

Sporogenesis :: Sporocyst (n.) Any protozoan when it becomes encysted produces germs by sporulation.

Pseudonavicula :: Pseudonavicula (n.) One of the minute spindle-shaped embryos of Gregarinae and some other Protozoa.

Infusoria :: Infusoria (n. pl.) One of the classes of Protozoa, including a large number of species, all of minute size..

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