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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

living thing, animate thing go
a living (or once living) entity

organism, being go
a living thing that has (or can develop) the ability to act or function independently

plant, flora, plant life go
(botany) a living organism lacking the power of locomotion

vascular plant, tracheophyte go
green plant having a vascular system: ferns, gymnosperms, angiosperms

aquatic plant, water plant, hydrophyte, hydrophytic plant go
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

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

noun.plant

5 Subcategories

curled leaf pondweed, curly pondweed, Potamogeton crispus go
European herb naturalized in the eastern United States and California
variously-leaved pondweed, Potamogeton gramineous go
of Europe (except the Mediterranean area) and the northern United States
loddon pondweed, Potamogeton nodosus, Potamogeton americanus go
pondweed with floating leaves
frog's lettuce go
very similar to Potamogeton
horned pondweed, Zannichellia palustris go
found in still or slow-moving fresh or brackish water