(n.pl.) One of the two principal groups of Chaetopoda. It includes those that have prominent parapodia and fascicles of setae. See Illust. under Parapodia.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). polychaeta. Retrieved September 21, 2026, from http://smartdefine.org/polychaeta/definitions/2047137 |
| Chicago | Webster's. 2011. "polychaeta" http://smartdefine.org/polychaeta/definitions/2047137 (accessed September 21, 2026). |
| Harvard | Webster's 2011, polychaeta, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/polychaeta/definitions/2047137>. |
| MLA | Webster's. "polychaeta" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/polychaeta/definitions/2047137> |