Webster's English Dictionary

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auscultation

aus.cul.ta.tion \.o.-sk*l-'ta--sh*n\ n [L auscultation-, auscultatio act of 
   listening, fr. auscultatus)X, pp. of auscultare to listen; akin to L auris 
   ear - more at EAR : the act of listening to sounds arising within organs as 
   an aid to diagno sis and treatment