Obs. [ad. med.L. leprōsitātem, f. leprōsus LEPROUS. Cf. OF. leprosité.] Leprous quality or condition. In Alchemy, metallic impurity.
1555. Eden, Decades, 28. With the … tortoyses of this Ilande, many leprous men are healed and clensed of theyr leprositie.
1626. Bacon, Nat. Hist., § 326. If the Crudities, Impurities and Leprosities of Metals were cured, they would become Gold.
1635. A. Read, Tumors & Vlcers, 222. The Grecian leprosity may be thus described.
