\Par`a*po"di*um\, n.; pl. {Parapodia}. [NL., fr. Gr.
? beside + ?, dim. of ? foot.] (Zo["o]l.)
One of the lateral appendages of an annelid; -- called also
{foot tubercle}.

Note: They may serve for locomotion, respiration, and
      sensation, and often contain spines or set[ae]. When
      well developed, a dorsal part, or notopodium, and a
      ventral part, or neuropodium, are distinguished.