First Known Use: 15th century
Dictionary
realgar
noun re·al·gar \rē-ˈal-ˌgär, -gər\
Definition of REALGAR
: an orange-red mineral consisting of arsenic sulfide and having a resinous luster
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Origin of REALGAR
Middle English, from Medieval Latin, from Catalan, from Arabic rahj al-ghār powder of the mine
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