con·tra·po·si·tion /-pəˈzɪʃən/
  對置,對位,對照
  Con·tra·po·si·tion n.
  1. A placing over against; opposite position. [Obs.]
  2. Logic A so-called immediate inference which consists in denying the original subject of the contradictory predicate; e. g.: Every S is P; therefore, no Not-P is S.
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