‖n. pl. [ NL. See Annelid. ] (Zool.) A division of the Articulata, having the body formed of numerous rings or annular segments, and without jointed legs. The principal subdivisions are the Chætopoda, including the Oligochæta or earthworms and Polychæta or marine worms; and the Hirudinea or leeches. See Chætopoda. [ 1913 Webster ]

{ } a. [ F. annélide, fr. anneler to arrange in rings, OF. anel a ring, fr. L. anellus a ring, dim. of annulus a ring. ] (Zool.) Of or pertaining to the Annelida. -- n. One of the Annelida. [ 1913 Webster ]