REALGAR

realgar. Realgar, n. red sulphuret of arsenic, ob.

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Re‐al″gar (rē̍‐ăl″gẽr), n. [[F. réalgar, Sp. rejalgar, Ar. rahj al ghār powder of the mine.]] (Min.) Arsenic sulphide, a mineral of a brilliant red color; red orpiment. It is also an artificial product.