cupel
21coppel — 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).… …
22Cupelled — Cupel Cu*pel (k[ u]*p[e^]l ), v. t. [imp. & p. p. {Cupelled} ( p?ld ); p. pr. & vb. n. {Cupelling}.] To refine by means of a cupel. [1913 Webster] …
23Cupelling — Cupel Cu*pel (k[ u]*p[e^]l ), v. t. [imp. & p. p. {Cupelled} ( p?ld ); p. pr. & vb. n. {Cupelling}.] To refine by means of a cupel. [1913 Webster] …
24купеляционная печь — [cupel(ling) furnace] подовая печь периодического действия для проведения купелирования благородных металлов в металлургии. Особенность конструкции купеляционной печи сменная ванна купель овальной или прямоугольной формы, футерованная,… …
25Cupellation — is a metallurgical process in which ores or alloyed metals are treated under high temperatures and carefully controlled operations in order to separate noble metals, like gold and silver, from base metals like lead, copper, zinc, arsenic,… …
26De re metallica —   Title page of 1556 edition …
27cupellation — cu·pel·la·tion (kyo͞o pə lāʹshən) n. A refining process for nonoxidizing metals, such as silver and gold, in which a metallic mixture is oxidized at high temperatures and base metals are separated by absorption into the walls of a cupel. * * *… …
28test — test1 [test] n. [ME, a cupel < OFr, a pot, cupel < L testum, earthen vessel < testa, piece of burned clay, shell < IE base * tekth , to weave, join > Sans tašta, cup, Gr tektōn, carpenter: mod. meaning from use of the cupel in… …
29Cupellation — Cu pel*la tion (k[=u] p[e^]l*l[=a] sh[u^]n) n. [See {Cupel}.] The act or process of refining gold or silver, etc., in a cupel. [1913 Webster] Note: The process consist in exposing the cupel containing the metal to be assayed or refined to a hot… …
30exam — Test Test, n. [OE. test test, or cupel, potsherd, F. t[^e]t, from L. testum an earthen vessel; akin to testa a piece of burned clay, an earthen pot, a potsherd, perhaps for tersta, and akin to torrere to patch, terra earth (cf. {Thirst}, and… …
