Found 2 items, similar to Archiannelida.
English → English (WordNet) Definition: Archiannelida Archiannelida n : a class of Annelida [syn: class Archiannelida]
English → English (gcide) Definition: Archiannelida Archiannelida \Ar`chi*an*nel"i*da\, n. pl. [NL.; pref. archi- + annelida.] (Zo["o]l.) A group of Annelida remarkable for having no external segments or distinct ventral nerve ganglions. [1913 Webster]