a posteriori

a posteriori

[ey po-steer-ee-awr-ahy, -ohr-ahy, -awr-ee, -ohr-ee]
from particular instances to a general principle or law; based upon actual observation or upon experimental data: an a posteriori argument that derives the theory from the evidence. Compare a priori ( def 1 ).
not existing in the mind prior to or independent of experience. Compare a priori ( def 2 ).

1615–25; < Latin: literally, from the one behind. See a-4, posterior

ad hoc, a posteriori, a priori, ex post facto, prima facie.
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World English Dictionary
a posteriori (eɪ pɒsˌtɛrɪˈɔːraɪ, -rɪ, ɑː)
1.  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 See posterior probability
[C18: from Latin, literally: from the latter (that is, from effect to cause)]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

a posteriori
Latin, literally "from what comes after" (see posterior).
Online Etymology Dictionary, © 2010 Douglas Harper
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