Archiannelida

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Archiannelida \Ar`chi*an*nel"i*da\, n. pl. [NL.; pref. archi- +
     annelida.] (Zool.)
     A group of Annelida remarkable for having no external
     segments or distinct ventral nerve ganglions.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  Archiannelida
       n : a class of Annelida [syn: {class Archiannelida}]