Artificial intelligent assistant

leprosity

leˈprosity 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.

Oxford English Dictionary

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