illative

illative
    adj 1: relating to or having the nature of illation or
           inference; "the illative faculty of the mind" [syn:
           {inferential}, {illative}]
    2: resembling or dependent on or arrived at by inference; "an
       illative conclusion"; "inferential reasoning" [syn:
       {illative}, {inferential}]
    3: expressing or preceding an inference; "`therefore' is an
       illative word"
    

Illative \Il"la*tive\, n.
   An illative particle, as for, because.
   [1913 Webster]
    

Illative \Il"la*tive\, a. [L. illativus: cf. F. illatif.]
   Relating to, dependent on, or denoting, illation;
   inferential; conclusive; as, an illative consequence or
   proposition; an illative word, as then, therefore, etc.
   [1913 Webster]

   {Illative conversion} (Logic), a converse or reverse
      statement of a proposition which in that form must be true
      because the original proposition is true.

   {Illative sense} (Metaph.), the faculty of the mind by which
      it apprehends the conditions and determines upon the
      correctness of inferences.
      [1913 Webster]