hydatid

3 definitions found

hydatid - Collaborative International Dictionary of English v.0.48 :

  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]

  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]

hydatid - WordNet (r) 2.1 (2005) :

  hydatid
      n 1: cyst filled with liquid; forms as a result of infestation
           by tapeworm larvae (as in echinococcosis)