'Subaquatic' definitions:

Definition of 'subaquatic'

From: WordNet
adjective
Growing or remaining under water; "viewing subaqueous fauna from a glass-bottomed boat"; "submerged leaves" [syn: subaqueous, subaquatic, submerged, submersed, underwater]
adjective
Partially aquatic; living or growing partly on land and partly in water; "a marginal subaquatic flora" [syn: semiaquatic, subaquatic]

Definition of 'Subaquatic'

From: GCIDE
  • Subaquatic \Sub`a*quat"ic\, Subaqueous \Sub*a"que*ous\, a.
  • 1. Being under water, or beneath the surface of water; adapted for use under water; submarine; as, a subaqueous helmet. [1913 Webster]
  • 2. (Geol.) Formed in or under water; as, subaqueous deposits. [1913 Webster] Subarachnoid