Definitions
1.NounAny of several plants that grow in ponds or similar aquatic conditions:
Potamogeton, a diverse and worldwide genus
Elodea, found in North America
Azolla, of cosmopolitan distribution
Aponogeton, in Africa, Asia and Australasia
opposite-leaved pondweed, Groenlandia densa, only plant of its genus, found chiefly in the Mediterranean region.
2.NounPotamogeton, a diverse and worldwide genus
3.NounElodea, found in North America
4.NounAzolla, of cosmopolitan distribution
5.NounAponogeton, in Africa, Asia and Australasia
6.Nounopposite-leaved pondweed, Groenlandia densa, only plant of its genus, found chiefly in the Mediterranean region.
7.NounCharales, an order of green algae