FILTERS are devices used to separate substances from a mixture. The term FILTERS can be broken down into three crossword solutions: STRAINS (7 letters), PERCOLATES (10 letters), and SEEPS (5 letters). STRAINS refers to the process of separating solids from liquids by passing the mixture through a porous material. PERCOLATES is the process of passing a liquid through a filter, such as coffee grounds, to extract flavor or other substances. Finally, SEEPS is the slow movement of a liquid through a porous material, such as soil.