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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..

Cysticercus :: Cysticercus (n.) The larval form of a tapeworm, having the head and neck of a tapeworm attached to a saclike body filled with fluid; -- called also bladder worm, hydatid, and measle (as, pork measle)..

Macrocystis :: Macrocystis (n.) An immensely long blackish seaweed of the Pacific (Macrocystis pyrifera), having numerous almond-shaped air vessels..

Pneumatocyst :: Pneumatocyst (n.) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia..

Cystic :: Cystic (a.) Pertaining to, or contained in, a cyst; esp., pertaining to, or contained in, either the urinary bladder or the gall bladder..

Hepatocystic :: Hepatocystic (a.) Of or pertaining to the liver and gall bladder; as, the hepatocystic ducts..

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

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

Cholecystotomy :: Cholecystotomy (n.) The operation of making an opening in the gall bladder, as for the removal of a gallstone..

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..

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..

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)..

Incysted :: Incysted (a.) See Encysted.

Redia :: Redia (n.) A kind of larva, or nurse, which is prroduced within the sporocyst of certain trematodes by asexual generation. It in turn produces, in the same way, either another generation of rediae, or else cercariae within its own body. Called also proscolex, and nurse. See Illustration in Appendix..

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..

Cystic :: Cystic (a.) Having the form of, or living in, a cyst; as, the cystic entozoa..

Cystid :: Cystid (n.) One of the Cystidea.

Cyst :: Cyst (n.) One of the bladders or air vessels of certain algae, as of the great kelp of the Pacific, and common rockweeds (Fuci) of our shores..

Ctenocyst :: Ctenocyst (n.) An organ of the Ctenophora, supposed to be sensory..

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

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