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Zoocyst :: Zoocyst (n.) A cyst formed by certain Protozoa and unicellular plants which the contents divide into a large number of granules, each of which becomes a germ..

Crinoidea :: Crinoidea (n. pl.) A large class of Echinodermata, including numerous extinct families and genera, but comparatively few living ones. Most of the fossil species, like some that are recent, were attached by a jointed stem. See Blastoidea, Cystoidea, Comatula..

Tentaculocyst :: Tentaculocyst (n.) One of the auditory organs of certain medusae; -- called also auditory tentacle.

Heterocyst :: Heterocyst (n.) A cell larger than the others, and of different appearance, occurring in certain algae related to nostoc..

Sporocyst :: Sporocyst (n.) An asexual zooid, usually forming one of a series of larval forms in the agamic reproduction of various trematodes and other parasitic worms. The sporocyst generally develops from an egg, but in its turn produces other larvae by internal budding, or by the subdivision of a part or all of its contents into a number of minute germs. See Redia..

Steatomatous :: Steatoma (n.) A cyst containing matter like suet.

Nereocystis :: Nereocystis (n.) A genus of gigantic seaweeds.

Polycystidea :: Polycystidea (n. pl.) A division of Gregarinae including those that have two or more internal divisions of the body.

Acephalocystic :: Acephalocystic (a.) Pertaining to, or resembling, the acephalocysts..

Acephalocyst :: Acephalocyst (n.) A larval entozoon in the form of a subglobular or oval vesicle, or hydatid, filled with fluid, sometimes found in the tissues of man and the lower animals; -- so called from the absence of a head or visible organs on the vesicle. These cysts are the immature stages of certain tapeworms. Also applied to similar cysts of different origin..

Cystolith :: Cystolith (n.) A urinary calculus.

Cysted :: Cysted (a.) Inclosed in a cyst.

Nematocyst :: Nematocyst (n.) A lasso cell, or thread cell. See Lasso cell, under Lasso..

Cyst :: Cyst (n.) A pouch or sac without opening, usually membranous and containing morbid matter, which is accidentally developed in one of the natural cavities or in the substance of an organ..

Cholecystis :: Cholecystis (n.) The gall bladder.

Encystment :: Encystment (n.) A process which, among some of the lower forms of life, precedes reproduction by budding, fission, spore formation, etc..

Cystoidean :: Cystoidean (n.) Same as Cystidean.

Vesicle :: Vesicle (n.) A bladderlike vessel; a membranous cavity; a cyst; a cell.

Comedo :: Comedo (n.) A small nodule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt)..

Cystocarp :: Cystocarp (n.) A minute vesicle in a red seaweed, which contains the reproductive spores..

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