verb (used with object), cu·peled, cu·pel·ing or (especially British) cu·pelled, cu·pel·ling.
Origin of cupel
Examples from the Web for cupellation
The cupellation must be carefully attended to, and all the imperfect buttons rejected.
The proportion of lead required for the cupellation of any particular alloy requires consideration.A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer
To separate this, the process known as "cupellation" is employed.The Elements of Blowpipe Analysis|Frederick Hutton Getman
Hence, unless the lead were tolerably rich in silver, it would not bear the expense of cupellation.
The charge sent to the cupellation furnace would contain between 3% and 5% copper, and between 3% and 5% sulphur.De Re Metallica|Georgius Agricola