Percolation
Pronunciation : Per`co*la"tion
Part of Speech : n.
Etymology : [L. percolatio.]
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913