Definition of cyst

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

Lern More About Cyst

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..
Cystotomy :: Cystotomy (n.) The act or practice of opening cysts; esp., the operation of cutting into the bladder, as for the extraction of a calculus..
Cnida :: Cnida (n.) One of the peculiar stinging, cells found in Coelenterata; a nematocyst; a lasso cell..
Myxocystodea :: Myxocystodea (n. pl.) A division of Infusoria including the Noctiluca. See Noctiluca.
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..
Cysticule :: Cysticule (n.) An appendage of the vestibular ear sac of fishes.
Cystine :: Cystine (n.) A white crystalline substance, C3H7NSO2, containing sulphur, occuring as a constituent of certain rare urinary calculi, and occasionally found as a sediment in urine..
Phyllocyst :: Phyllocyst (n.) The cavity of a hydrophyllium.
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..
Polycystid :: Polycystid (n.) One of the Polycystina.
Macrocystis :: Macrocystis (n.) An immensely long blackish seaweed of the Pacific (Macrocystis pyrifera), having numerous almond-shaped air vessels..
Incyst :: Incyst (v. t.) See Encyst.
Endocyst :: Endocyst (n.) The inner layer of the cells of Bryozoa.
Cystolith :: Cystolith (n.) A concretion of mineral matter within a leaf or other part of a plant.
Nereocystis :: Nereocystis (n.) A genus of gigantic seaweeds.
Nematocyst :: Nematocyst (n.) A lasso cell, or thread cell. See Lasso cell, under Lasso..
Cystoid :: Cystoid (n.) Alt. of Cystoidea.
Cystoidean :: Cystoidean (n.) Same as Cystidean.
Cystocele :: Cystocele (n.) Hernia in which the urinary bladder protrudes; vesical hernia.
Atheroma :: Atheroma (n.) An encysted tumor containing curdy matter.
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