a pos·te·ri·o·ri 
(ä′ pŏ-stîr′ē-ôrē, -ôrī, ā′)
(ä′ pŏ-stîr′ē-ôrē, -ôrī, ā′)adj.
1. Derived by or designating the process of reasoning from facts or particulars to general principles or from effects to causes; inductive; empirical.
2.
a. Justified by appeal to experience.
b. Knowable from experience.
[Medieval Latin ā posteriōrī : Latin ā, from + Latin posteriōrī, ablative of posterior, later.]
a′ pos·te′ri·ori adv.