vt to refine by means of a cupel.
2. cupel ·noun a shallow porous cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime).
CUPEL
Meaning of CUPEL in English
Webster English vocab. Английский словарь Webster. 2012
vt to refine by means of a cupel.
2. cupel ·noun a shallow porous cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime).
Webster English vocab. Английский словарь Webster. 2012