'Hydatid' definitions:

Definition of 'hydatid'

From: WordNet
noun
Cyst filled with liquid; forms as a result of infestation by tapeworm larvae (as in echinococcosis)

Definition of 'Hydatid'

From: GCIDE
  • Hydatid \Hy"da*tid\, n. [Gr. ?, ?, a watery vesicle under the upper eyelid, fr. "y`dwr, "y`datos, water: cf. F. hydatide.] (Zool.) A membranous sac or bladder filled with a pellucid fluid, found in various parts of the bodies of animals, but unconnected with the tissues. It is usually formed by parasitic worms, esp. by larval tapeworms, as Echinococcus and C[oe]nurus. See these words in the Vocabulary. [1913 Webster]
  • Hydatid of Morgagni (Anat.), one of the small pedunculated bodies found between the testicle and the head of the epididymis, and supposed to be a remnant of the M["u]llerian duct. [1913 Webster]

Definition of 'hydatid'

From: GCIDE
  • Cysticerce \Cys"ti*cerce\ (s?s"t?-s?rs), Cysticercus \Cys`ti*cer"cus\ (-s?r"k?s), n. [NL. cysticercus, fr. Gr. ???? bladder + ke`rkos tail: cf. F. cysticerque.] (Zool.) 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). [1913 Webster]
  • Note: These larvae live in the tissues of various living animals, and, when swallowed by a suitable carnivorous animal, develop into adult tapeworms in the intestine. See Measles, 4, Tapeworm. [1913 Webster]