(n.pl.) A suborder of Gephyrea, including those which have the body unarmed and the intestine opening anteriorly.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Sipunculacea. Retrieved September 25, 2026, from http://smartdefine.org/sipunculacea/definitions/2062377 |
| Chicago | Webster's. 2011. "Sipunculacea" http://smartdefine.org/sipunculacea/definitions/2062377 (accessed September 25, 2026). |
| Harvard | Webster's 2011, Sipunculacea, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/sipunculacea/definitions/2062377>. |
| MLA | Webster's. "Sipunculacea" 28 May 2011. Web. 25 September 2026. <http://smartdefine.org/sipunculacea/definitions/2062377> |