Found 1 items, similar to Cupel dust.
English → English (gcide) Definition: Cupel dust Cupel \Cu"pel\ (k[=u]"p[e^]l), n. [LL. cupella cup (cf. L. cupella, small cask, dim. of cupa) : cf. F. coupelle. See Cup, and cf. Coblet.] A shallow porous cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime). [Written also coppel.] [1913 Webster] Cupel dust, powder used in purifying metals. [1913 Webster]