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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. n. A porous cup, often made of bone ash, used in assaying to separate precious metals from base elements such as lead.
  2. n. The bottom or receptacle in a silver-refining furnace.
  3. v. To assay or separate from base metals in a cupel.

Century Dictionary and Cyclopedia

  1. n. In metallurgy, a small vessel made of pulverized bone-earth, in the form of frustum of a cone, with a cavity in the larger end, in which lead containing gold and silver is cupeled. See cupellation. In assaying with the cupel the lead is absorbed by the porous boneash into which it sinks.
  2. To perform the process of cupellation upon.
  3. n. The hearth of a cupellation furnace in which silver is separated from lead; a test. See test, 2.

Wiktionary

  1. n. A small circular receptacle used in assaying gold or silver with lead.
  2. v. To refine by means of a cupel.

GNU Webster's 1913

  1. n. A shallow porous cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime).
  2. v. To refine by means of a cupel.

WordNet 3.0

  1. n. a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead

Etymologies

  1. From French coupelle, mediaeval Latin cupella, diminutive of cupa ‘cask’. (Wiktionary)
  2. French coupelle, from Old French, diminutive of coupe, cup, from Late Latin cuppa, drinking vessel. (American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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Lists

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Comments

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  • yarb Silver assays will be adjusted for slag and cupel losses.

    - contract for refining of lead and silver ore. Jan 22, 2009

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‘cupel’ has been looked up 1533 times, added to 8 lists, commented on 1 time, and has a Scrabble score of 9.