il·la·tive 
(ĭlə-tĭv, ĭ-lā-)
(ĭlə-tĭv, ĭ-lā-)adj.
1. Of, relating to, or of the nature of an illation.
2. Expressing or preceding an inference. Used of a word.
3. Grammar Of, relating to, or being a grammatical case indicating motion toward or into in some languages, as in Finnish Helsinkiin, "to Helsinki."
n.
1. A word or phrase, such as hence or for that reason, that expresses an inference.
2. See illation.
3. Grammar
a. The illative case.
b. A word or form in the illative case.
illa·tive·ly adv.