CUPELLED

Verb

cupelled

simple past tense and past participle of cupel

Source: Wiktionary

CUPEL

Cu"pel (k"pl), n. Etym: [LL. cupella cup (cf. L. cupella, small cask, dim. of cupa) : cf. F. coupelle. See Cup, and cf. Coblet.]

Definition: 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.

Cu*pel" (k-pl"), v. t. [imp. & p. p. Cupelled (-pld"); p. pr. & vb. n. Cupelling.]

Definition: To refine by means of a cupel.

Source: Webster’s Unabridged Dictionary 1913 Edition