Zool. Pl. -ci. [mod.L., f. Gr. κύστις bladder + κέρκος tail. F. cysticerque.] The scolex or larva of a tape-worm in its encysted state; a hydatid.

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1841–71.  T. R. Jones, Anim. Kingd. (ed. 4), 152. The discovery that the cystiform Entozoa, Cœnurus and Cysticercus … are merely the Scoleces of ordinary Tape worms.

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1875.  H. Walton, Dis. Eye, 24. The cysticercus, the … larval state of the … pork tape-worm, gains access to the human body by being swallowed in an earlier larval condition.

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  Hence Cysticercal a., Cysticercoid a. and sb., Cysticercoidal a.

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1858.  Copland, Dict. Pract. Med., III. II. 1385. A portion of the Tæniæ pass through a true cysticercal (bladder-worm) stage. Ibid. True Cysticerci occur only in warm-blooded animals … and cysticercoid forms principally in cold-blooded animals.

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1877.  Huxley, Anat. Inv. Anim., iv. 212. The dog devours the louse, and the Cysticercoid becomes a Tænia cucumerina in his intestine.

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