Source : Webster's Revised Unabridged Dictionary (1913)

Cystic \Cyst"ic\ (s?s"t?k), a. [Cf. F. cystique.]
   1. Having the form of, or living in, a cyst; as, the cystic
      entozoa.

   2. Containing cysts; cystose; as, cystic sarcoma.

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

   {Cystic duct}, the duct from the gall bladder which unites
      with the hepatic to form the common bile duct.

   {Cystic worm} (Zo["o]l.), a larval tape worm, as the
      cysticercus and echinococcus.

Source : WordNet®

cystic
     adj 1: of or relating to a normal cyst (as the gallbladder or
            urinary bladder)
     2: of or relating to or resembling a cyst