a. In uranium leaching, flushing from below of colloidal slime from ion
exchange column after adsorption cycle. The cleaning of sand filters.
b. Water or waves thrown back by an obstruction such as a ship,
breakwater, cliff, etc. AGI
c. The return flow of water seaward on a beach after the advance of a
wave. See also: backrush
Dictionary of Mining, Mineral, and Related Terms