ETYM Latin aquaticus: cf. French aquatique. Related to Aqua.
1. Operating or living or growing in water.
2. Relating to or consisting of or being in water.
A plant that lives in or on water.
(plant) living in or by water.
Living in water. All life on Earth originated in the early oceans, because the aquatic environment has several advantages for organisms. Dehydration is almost impossible, temperatures usually remain stable, and the density of water provides physical support.