(n.) Any species of turbellarian worms belonging to Planaria, and many allied genera. The body is usually flat, thin, and smooth. Some species, in warm countries, are terrestrial.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). planaria. Retrieved September 24, 2026, from http://smartdefine.org/planaria/definitions/2046082 |
| Chicago | Webster's. 2011. "planaria" http://smartdefine.org/planaria/definitions/2046082 (accessed September 24, 2026). |
| Harvard | Webster's 2011, planaria, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/planaria/definitions/2046082>. |
| MLA | Webster's. "planaria" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/planaria/definitions/2046082> |