percolation

noun
per·​co·​la·​tion | \ ˌpər-kə-ˈlā-shən How to pronounce percolation (audio) \

Medical Definition of percolation

1 : the slow passage of a liquid through a filtering medium
2 : a method of extraction or purification by means of filtration
3 : the process of extracting the soluble constituents of a powdered drug by passage of a liquid through it

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