a posteriori in British English
(eɪ pɒsˌtɛrɪˈɔːraɪ, -rɪ, ɑː)
adjective logic1. relating to or involving inductive reasoning from particular facts or effects to a general principle
2. derived from or requiring evidence for its validation or support; empirical; open to revision
3. statistics posterior probability
Compare a priori, synthetic (sense 4)Word origin
C18: from Latin, literally: from the latter (that is, from effect to cause)