Found 2 items, similar to Polychaeta.
English → English (WordNet) Definition: Polychaeta Polychaeta n : marine annelid worms [syn: class Polychaeta]
English → English (gcide) Definition: Polychaeta Polychaeta \Pol`y*ch[ae]"ta\, n. pl. [NL., from Gr. poly`s many + ? hair.] (Zo["o]l.) One of the two principal groups of Ch[ae]topoda. It includes those that have prominent parapodia and fascicles of set[ae]. See Illust. under Parapodia. [1913 Webster] Annelida \An*nel"i*da\, n. pl. [NL. See Annelid.] (Zo["o]l.) A division of the Articulata, having the body formed of numerous rings or annular segments, and without jointed legs. The principal subdivisions are the Ch[ae]topoda, including the Oligoch[ae]ta or earthworms and Polych[ae]ta or marine worms; and the Hirudinea or leeches. See Ch[ae]topoda. [1913 Webster]