1. one of a pair of fleshy appendages of a polychete annelid that functions in locomotion and breathing;
The Collaborative International Dictionary of English v.0.48:
Parapodium \Par`a*po"di*um\, n.; pl. Parapodia. [NL., fr. Gr.
para` beside + ?, dim. of ? foot.] (Zool.)
One of the lateral appendages of an annelid; -- called also
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.
WordNet (r) 3.0 (2006):
n 1: one of a pair of fleshy appendages of a polychete annelid
that functions in locomotion and breathing