n 1  :  wearing, grinding, or rubbing away by friction  2 a  :  the rubbing or scraping of the surface layer of cells or tissue from an area of the skin or mucous membrane : also  :  a place so abraded  b  :  the mechanical wearing away of the tooth surfaces by chewing .
 
 
 
Similar sounding terms:  ab·er·ra·tion  abor·tion 
 
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