1.
[syn: subaqueous, subaquatic, submerged, submersed, underwater]
The Collaborative International Dictionary of English v.0.48:
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
WordNet (r) 3.0 (2006):
subaqueous
adj 1: growing or remaining under water; "viewing subaqueous
fauna from a glass-bottomed boat"; "submerged leaves"
[syn: subaqueous, subaquatic, submerged,
submersed, underwater]