SINCE 1828
cupel
noun
cu·pel
| \ kyü-ˈpel
, ˈkyü-pəl
\
, ˈkyü-pəl
\
Definition of cupel
(Entry 1 of 2)
: a small shallow porous cup especially of bone ash used in assaying to separate precious metals from lead
cupel
verb
cupelled
or cupeled;
cupelling
or cupeling
Definition of cupel (Entry 2 of 2)
: to refine by means of a cupel
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