Cupel
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A shallow porus cup, used in refining precious metals, commonlymade of bone ashes (phosphate of lime). [Written also coppel.] Cupeldust, powder used in purifying metals.
Cupel meaning & definition 1 of Cupel.
A shallow porus cup, used in refining precious metals, commonlymade of bone ashes (phosphate of lime). [Written also coppel.] Cupeldust, powder used in purifying metals.
