Poly·gor·di·us | \ ˌpälēˈgȯ(r)dēəs, -lə̇ˈg- \
Definition of Polygordius
: a genus (the type of the family Polygordiidae) comprising slender cylindrical many-segmented marine annelid worms belonging to the class Archiannelida and having the segmentation externally obscure and the sexes separate
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