refractory pot refractory period • refracture · · · Info · Definitions · Synonyms · Characters · · refractory pot · · Text Common · · Latin · · Scripts 14 · · Length 5 · · Syllables Definitions · · · (noun) a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead. Synonyms: bone-ash cup, cupel, refractory pot. · · Noun Definition 1 Synonyms · · · bone-ash cup · · Synonym 1 cupel · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079