Webster's English Dictionary

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leprosy

lep.ro.sy \'lep-r*-se-\ \le-'pra:t-ik\ n 1: a chronic disease caused by 
   bacillus (Mycobacterium leprae) and ch aracterized by the formation of 
   nodules or of macules that enlarge and spread accompanied by loss of 
   sensation with eventual paralysis, wasting of muscle, and production of 
   deformities and mutilations 2: a harmful influence  - lep.rot.ic aj