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onychosis
on·y·cho·sis [ ònnə kṓssiss ]


noun 
Definition:
 
disorder of the nails: a disorder of the toenails or fingernails
[< Greek onukh-, stem of onux "nail, claw" + -osis]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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