cupel

(kyo̵̅o̅′pəl, kyo̵̅o̅ pel′)

noun

Origin: Fr coupelle < ML cupella, dim. < L cupa: see cup

to assay or refine in a cupel

Related Forms:

See cupel in American Heritage Dictionary 4

cu·pel

noun

A porous cup, often made of bone ash, used in assaying to separate precious metals from base elements such as lead.
The bottom or receptacle in a silver-refining furnace.

transitive verb cupeled cu·peled or cu·pelled, cupeling cu·pel·ing or cu·pel·ling, cu·pels

To assay or separate from base metals in a cupel.

Origin: French coupelle, from Old French, diminutive of coupe, cup, from Late Latin cuppa, drinking vessel.

Related Forms:

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