Definition of potamogeton in US English:

potamogeton

noun

Botany
  • Originally: any of several kinds of aquatic plant (not identified). Later: specifically (Potamogeton) a cosmopolitan genus of aquatic plants with submerged and sometimes floating leaves (family Potamogetonaceae); (also potamogeton) any of various plants of this genus; a pondweed.

Origin

Early 17th century; earliest use found in Philemon Holland (1552–1637), translator. From post-classical Latin potamogeton, variant (e.g. in 16th-cent. editions of Pliny) of classical Latin potamogītōn (Pliny) from Hellenistic Greek ποταμογείτων pondweed from ancient Greek ποταμός river + γείτων neighbour.