aquatic(n = noun.plant) - a plant that lives in or on water;
is a kind of flora, plant, plant life
Derived form adjective aquatic₂

1.  aquatic(a = adj.pert) - relating to or consisting of or being in water; "an aquatic environment"

2.  aquatic(a = adj.all) - operating or living or growing in water; "boats are aquatic vehicles"; "water lilies are aquatic plants"; "fish are aquatic animals"
Antonyms: amphibious, terrestrial
Derived form noun aquatic₁

   Pertaining to water; growing in water; living in, swimming in, or frequenting the margins of waters; as, aquatic plants and fowls. [1913 Webster]

1.  An aquatic animal or plant. [1913 Webster]

2.  Sports or exercises practiced in or on the water. [1913 Webster]

aquatic, adj. & n.
--adj.
1 growing or living in or near water.
2 (of a sport) played in or on water.
--n.
1 an aquatic plant or animal.
2 (in pl.) aquatic sports.

Etymology:
ME f. F aquatique or L aquaticus f. aqua water

N  water, serum, serosity, lymph, rheum, diluent, agua, aqua, pani, dilution, maceration, lotion, washing, immersion, humectation, infiltration, spargefaction, affusion, irrigation, douche, balneation, bath, deluge, high water, flood tide, watery, aqueous, aquatic, hydrous, lymphatic, balneal, diluent, drenching, diluted, weak, wet, the waters are out.

aquatic bird, aquatic fern, aquatic mammal, aquatic plant, aquatic vertebrate