Cu"pel (k?"p?l), n. [LL. cupella cup (cf. L. cupella, small cask, dim. of cupa) : cf. F. coupelle. See Cup, and cf. Coblet.]
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.
© Webster 1913.
Cu*pel" (k?-p?l"), v. t. [imp. & p. p. Cupelled (-p?ld"); p. pr. & vb. n. Cupelling.]
To refine by means of a cupel.
© Webster 1913.