polychaeta
  多毛綱
  Pol·y·chæ·ta n. pl.  Zool. One of the two principal groups of Chætopoda. It includes those that have prominent parapodia and fascicles of setæ. See Illust. under Parapodia.
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  Polychaeta
       n : marine annelid worms [syn: class Polychaeta]