syllogistic
  (a.)三段論法的,演繹的,演繹性的
  Syl·lo·gis·tic Syl·lo·gis·tic·al a.  Of or pertaining to a syllogism; consisting of a syllogism, or of the form of reasoning by syllogisms; as, syllogistic arguments or reasoning.
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  syllogistic
       adj : of or relating to or consisting of syllogism; "syllogistic
             reasoning"