Ĭl'la-tĭve1, a.
a. [Lat. illativus, Fr. illatif, It. illativo, Sp. ilativo. See supra.]
Sense 1. Relating to, formed by, or dependent on, illation; inferential; conclusive; as, an illative consequence.
Sense 2. Denoting an inference or rational connection or justification; as, an illative word or proposition.