The return water flow of swash. This sheet of water flows back to ocean because of gravity.

Another term for reverse circulation, the intentional pumping of wellbore fluids down the annulus and back up through the drillpipe. This is the opposite of the normal direction of fluid circulation i [..]

1876, "motion of a receeding wave," from back (adj.) + wash (n.).

The return flow of water down the beach as a result of wave action; the opposite of swash.

used in both physical and human geography

The disturbed air in the wake of an aeroplane in flight

To reverse the flow of water or other fluid so as to clean a device, such as a filter.

water from a breaking wave which flows under gravity down a beach and returns to the sea

(n) the flow of air that is driven backwards by an aircraft propeller(n) the consequences of an event (especially a catastrophic event)(n) the wave that spreads behind a boat as it moves forward

(1) The seaward return of the water following the UPRUSH of the WAVES. Also called backrush or run down. (2) Water of WAVES thrown back by an obstruction such as a ship, BREAKWATER, CLIFF, etc.

Waves reflected from obstructions such as cliffs, seawalls, breakwaters, etc, running seaward and combining with the incoming waves to cause a steep and confused sea.

A flow through a vessel in the opposite direction of normal flow employed to clean the bed material.

Phase that reverses water flow to flush dirt out of the tank in the normal operation of a water softener and other filter systems.

a negative effect that assessment may have on teaching and learning. For the teacher it manifests itself in 'teaching to the test'. For the learner it may involve solely concentrating on wha [..]

(1) The seaward return of the water following the uprush of the waves. Also called backrush or run down. (2) Water of waves thrown back by an obstruction such as a ship, breakwater, cliff, etc.

 The process of thoroughly cleaning the filter by reversing the flow of water through it with the dirt and rinse water going to waste.

When drinking water is treated by filtration, the filter eventually becomes clogged with particles.  The water is then pumped back through the filter (backwash) to flush out the particles.  The washwa [..]

The process in which beds of filter or ion exchange media are subjected to flow opposite to the service flow direction to loosen the bed and to flush out suspended matter collected during its operatio [..]

Reversed flow through a filter medium to remove filtered solids.

The process in which beds of filter or ion-exchange media are subjected to flow opposite to the service -flow direction to loosen the bed and to flush suspended matter, collected during the service ru [..]

Causes blossom or bloom.

The counter-current flow of water through a resin bed (that is, in at the bottom of the exchange unit, out at the top) to clean and regenerate the bed after exhaustion (water treatment). Also, the pro [..]

When waves rebound off the beach and sweep back to the ocean, colliding with incoming waves.

The movement of water back towards the sea after a wave has broken.