water columnwater column
The vertical expanse of water lying between an area on the surface of a body of water and the floor directly below it but excluding the surface and the floor.
(plural water columns)
- (environmental sciences, hydrology) A notional column of water from the surface to the bottom in a natural setting, notable for the differences in physical and chemical properties at various depths.
- (deep-sea diving) The zone in which ascent and descent occur.