potamogeton
noun
pot·a·mo·ge·ton
ˌpätəmōˈjēˌtän
1
capitalized : a large genus of aquatic herbs (family Potamogetonaceae) that are found in quiet waters throughout temperate regions and have spicate flowers with a four-parted perianth and usually floating leaves see pondgrass, pondweed
2
plural -s : any plant of the genus Potamogeton
Word History
Etymology
New Latin, from Latin, pondweed, from Greek potamogeitōn, from potamos river + geitōn neighbor