Percolation

noun

1. The act of percolating; the act of straining or filtering; filtration; the act of passing through small interstices, as liquor through felt or a porous stone.
2. In pharmacy, the process of extracting the soluble parts of powdered substances by passing through them successive quantities of a solvent which yields a clear extract free from insoluble matters: used in the sense of displacement.
3. The act or process of percolating, or filtering; filtration; straining. Specifically (Pharm.), the process of exhausting the virtues of a powdered drug by letting a liquid filter slowly through it.
4. the seepage or filtration of a liquid through a porous substance
5. the act of making coffee in a percolator