chaetopoda

from The Collaborative International Dictionary of English v.0.48

Annelida \An*nel"i*da\, 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 {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]

from The Collaborative International Dictionary of English v.0.48

Chaetopoda \Ch[ae]*top"o*da\, n. pl. [NL., from Gr. ? hair +
   -poda.] (Zool.)
   A very extensive order of Annelida (segmented worms),
   characterized by the presence of lateral set[ae], or spines,
   on most or all of the segments. They are divided into two
   principal groups: {Oligoch[ae]ta}, including the earthworms
   and allied forms, and {Polych[ae]ta}, including most of the
   marine species.
   [1913 Webster]

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