资料来源 : Webster's Revised Unabridged Dictionary (1913)

Polycystidea \Pol`y*cys*tid"e*a\, n. pl. [NL. See {Poly-}, and
   {Cystidea}.] (Zo["o]l.)
   A division of Gregarin[ae] including those that have two or
   more internal divisions of the body.