(n.pl.) A division of Radiolaria including numerous minute marine species. The skeleton is composed of silica, and is often very elegant in form and sculpture. Many have been found in the fossil state.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). polycystina. Retrieved September 25, 2026, from http://smartdefine.org/polycystina/definitions/2047160 |
| Chicago | Webster's. 2011. "polycystina" http://smartdefine.org/polycystina/definitions/2047160 (accessed September 25, 2026). |
| Harvard | Webster's 2011, polycystina, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/polycystina/definitions/2047160>. |
| MLA | Webster's. "polycystina" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/polycystina/definitions/2047160> |