Passage d'un liquide ŕ travers un filtre destiné ŕ l'éclaircir, ŕ le purifier.
ETYM Cf. French filtration.
Technique by which suspended solid particles in a fluid are removed by passing the mixture through a filter, usually porous paper, plastic, or cloth. The particles are retained by the filter to form a residue and the fluid passes through to make up the filtrate. For example, soot may be filtered from air, and suspended solids from water.
The process of filtering.