- adapted for underwater use or existence; underwater
- formed, living, or occurring under water
Origin of subaqueoussub- + aqueous
- Formed or adapted for underwater use or operation; submarine.
- Found or occurring underwater: subaqueous organisms; subaqueous rocks.
- Existing below the water surface.
- subaqueous deposits
- Designed for underwater use.
- a subaqueous helmet
sub- +"Ž aqueous