Any plant of the genus Myriophyllum, aquatic herbs with whorled leaves, the submersed ones pinnately parted into capillary divisions.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). water milfoil. Retrieved September 29, 2026, from http://smartdefine.org/water_milfoil/definitions/2080939 |
| Chicago | Webster's. 2011. "water milfoil" http://smartdefine.org/water_milfoil/definitions/2080939 (accessed September 29, 2026). |
| Harvard | Webster's 2011, water milfoil, Smart Define, viewed 29 September, 2026, <http://smartdefine.org/water_milfoil/definitions/2080939>. |
| MLA | Webster's. "water milfoil" 28 May 2011. Web. 29 September 2026. <http://smartdefine.org/water_milfoil/definitions/2080939> |