Subaqueous

Definition:

• (a.) Being under water, or beneath the surface of water; adapted for use under water; submarine; as, a subaqueous helmet.
• (a.) Formed in or under water; as, subaqueous deposits.

Compare subaqueous with other words:

subaqueous vs. submarine

subaqueous vs. submerged

subaquatic vs. subaqueous

subaerial vs. subaqueous

subaqueous vs. underwater