(n.pl.) A large division of Anthozoa, including those which have simple tentacles and do not form stony corals. Sometimes, in a wider sense, applied to all the Anthozoa, expert the Alcyonaria, whether forming corals or not.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). actinaria. Retrieved September 24, 2026, from http://smartdefine.org/actinaria/definitions/1970660 |
| Chicago | Webster's. 2011. "actinaria" http://smartdefine.org/actinaria/definitions/1970660 (accessed September 24, 2026). |
| Harvard | Webster's 2011, actinaria, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/actinaria/definitions/1970660>. |
| MLA | Webster's. "actinaria" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/actinaria/definitions/1970660> |