Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Cupellation" Definition
noun
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.
Source: American Heritage Dictionary
Refinement (as of gold or silver) in a by exposure to high temperature in a blast of air by which the unwanted metals are oxidized.
Source: Merriam-Webster
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