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acerbation
ac·er·ba·tion [ àssər báysh'n ] (plural ac·er·ba·tions)


noun 
Definition:
 
worsening of a disease or disorder: an increase in the severity of a disease or disorder, or a worsening of its symptoms
[Late 20th century. Back-formation < exacerbation]
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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