Source : Webster's Revised Unabridged Dictionary (1913)

Emendation \Em`en*da"tion\, n. [L. emendatio: cf. F.
   ['e]mendation.]
   1. The act of altering for the better, or correcting what is
      erroneous or faulty; correction; improvement. ``He lies in
      his sin without repentance or emendation.'' --Jer. Taylor.

   2. Alteration by editorial criticism, as of a text so as to
      give a better reading; removal of errors or corruptions
      from a document; as, the book might be improved by
      judicious emendations.

Source : WordNet®

emendation
     n : a correction by emending; a correction resulting from
         critical editing