ratiocinative
  (a.)推理的,推論的,好理論的
  Ra·ti·oc·i·na·tive a.  Characterized by, or addicted to, ratiocination; consisting in the comparison of propositions or facts, and the deduction of inferences from the comparison; argumentative; as, a ratiocinative process.
     The ratiocinative meditativeness of his character.   --Coleridge.
  ◄ ►
  ratiocinative
       adj : based on exact thinking; "one's ratiocinative powers"