a posteriori

[ ey po-steer-ee-awr-ahy, -ohr-ahy, -awr-ee, -ohr-ee ]
/ ˌeɪ pɒˌstɪər iˈɔr aɪ, -ˈoʊr aɪ, -ˈɔr i, -ˈoʊr i /


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).

Origin of a posteriori

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


ad hoc a posteriori a priori ex post facto prima facie
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for a posteriori

a posteriori
/ (eɪ pɒsˌtɛrɪˈɔːraɪ, -rɪ, ɑː) /

adjective logic

relating to or involving inductive reasoning from particular facts or effects to a general principle
derived from or requiring evidence for its validation or support; empirical; open to revision
statistics See posterior probability

Word Origin for a posteriori

C18: from Latin, literally: from the latter (that is, from effect to cause)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012