The Collaborative International Dictionary of English v.0.48:

Contradistinction \Con`tra*dis*tinc"tion\, n.
   Distinction by contrast.
   [1913 Webster]

         That there are such things as sins of infirmity in
         contradistinction to those of presumption is not to be
         questioned.                              --South.
   [1913 Webster]

WordNet (r) 3.0 (2006):

contradistinction
    n 1: a distinction drawn on the basis of contrast; "sculpture in
         contradistinction to painting"