Dictionary

cupellation

cupellation

noun cu·pel·la·tion \ˌkyü-pə-ˈlā-shən, -ˌpe-\

Definition of CUPELLATION

:  refinement (as of gold or silver) in a cupel by exposure to high temperature in a blast of air by which the unwanted metals are oxidized

First Known Use of CUPELLATION

circa 1691

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