pondweed

/ˌpɑn(d)ˈwid/

Other forms: pondweeds

Definitions of pondweed

1. noun

   any of several submerged or floating freshwater perennial aquatic weeds belonging to the family Potamogetonaceae
   types:

   Potamogeton crispus, curled leaf pondweed, curly pondweed

   European herb naturalized in the eastern United States and California

   Potamogeton gramineous, variously-leaved pondweed

   of Europe (except the Mediterranean area) and the northern United States

   Potamogeton americanus, Potamogeton nodosus, loddon pondweed

   pondweed with floating leaves; of northern United States and Europe

   frog's lettuce

   very similar to Potamogeton; of western Africa, Asia, and Europe

   Zannichellia palustris, horned pondweed

   found in still or slow-moving fresh or brackish water; useful to oxygenate cool water ponds and aquaria

   type of:

   aquatic plant, hydrophyte, hydrophytic plant, water plant

   a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth
2. noun

   submerged freshwater perennials
   synonyms: Elodea, ditchmoss, genus Elodea

   type of:

   liliopsid genus, monocot genus

   genus of flowering plants having a single cotyledon (embryonic leaf) in the seed