Thesaurus: cupel

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Definitions

1. n. A shallow porous cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime).
2. v. t. To refine by means of a cupel.
3. n. a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
4. A shallow porus cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime). [Written also coppel.] Cupel dust, powder used in purifying metals. To refine by means of a cupel.
5. 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.
6. n a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead