(n.pl.) A division of alcyonoid corals, including the seapens and related kinds. They are able to move about by means of the hollow muscular peduncle, which also serves to support them upright in the mud. See Pennatula, and Illust. under Alcyonaria.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). pennatulacea. Retrieved September 20, 2026, from http://smartdefine.org/pennatulacea/definitions/2043378 |
| Chicago | Webster's. 2011. "pennatulacea" http://smartdefine.org/pennatulacea/definitions/2043378 (accessed September 20, 2026). |
| Harvard | Webster's 2011, pennatulacea, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/pennatulacea/definitions/2043378>. |
| MLA | Webster's. "pennatulacea" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/pennatulacea/definitions/2043378> |