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cupel

American  
[kyoo-puhl, kyoo-pel] / ˈkju pəl, kjuˈpɛl /

noun

  1. a small, cuplike, porous container, usually made of bone ash, used in assaying, as for separating gold and silver from lead.

  2. a receptacle or furnace bottom in which silver is refined.


verb (used with object)

cupeled, cupeling, cupelled, cupelling
  1. to heat or refine in a cupel.

cupel British  
/ kjʊˈpɛl, ˈkjuːpəl /

noun

  1. a refractory pot in which gold or silver is refined

  2. a small porous bowl made of bone ash in which gold and silver are recovered from a lead button during assaying

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (tr) to refine (gold or silver) by means of cupellation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of cupel

1595–1605; < Medieval Latin cūpella, equivalent to Latin cūp ( a ) tub + -ella diminutive suffix

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The goldsmith not content with the touch-stone and the application of aquafortis, exposed the metal on the cupel with lead and fused it with antimony, but it sustained no loss.

From The Seven Follies of Science [2nd ed.] A popular account of the most famous scientific impossibilities and the attempts which have been made to solve them. by Phin, John

Finally, the stibium with a little lead added, is melted in the cupel, in which, after all the rest has been consumed by the fire, the silver alone remains.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

Finally, in the same way that gold and silver are separated from lead in a cupel, so also are they separated in the cupellation furnace.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

The resulting lead button hammered into shape and carefully cleansed from slag is ready for the cupel.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" by Various

These metals are heated until the lead and the copper are consumed, and again, the same weight of each is melted in the same manner in another cupel.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

The lead is then folded over, with the help of two pins; and cupelled.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

These concentrates—mostly galena—were smelted in low furnaces and the lead was subsequently cupelled.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

The dish with the dried residue is then scorified and the resulting button of lead is cupelled.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

Effect of Varying Lead.—In each experiment 0.4 gram of silver was taken and cupelled with the lead.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The lead button is then cupelled on a very fine cupel, as already described.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

Refer to the table on page 105 to find what weight of lead is required for cupelling 1 gram of alloy.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The cupelling temperature in Dr. Rose's experiment was as much above the melting-point of gold as this is above that of the silver-gold alloy.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The determination may also be made by cupelling the button of lead got in the dry lead assay.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

Similarly, cupelling 0.1 gram, the resulting button may be 0.098; the absolute loss is only 0.002 gram, but this equals 2 per cent. of the silver present.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The assay depends on first heating the gold ore or alloy with lead in a porous crucible, that is, cupelling it.

From The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli by Various

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