'aquatic' definitions:
Definition of 'aquatic'
(from WordNet)
adjective
Relating to or consisting of or being in water; "an aquatic environment"
adjective
Operating or living or growing in water; "boats are aquatic vehicles"; "water lilies are aquatic plants"; "fish are aquatic animals" [ant: amphibious, terrestrial]
noun
A plant that lives in or on water
Synonyms of 'aquatic'
From: Moby Thesaurus