a posteriori
adjective, adverb/ˌeɪ pɒˌsteriˈɔːraɪ/
/ˌɑː pəʊˌstɪriˈɔːri/
(from Latin, formal)- analysing something by starting from known facts and then thinking about the possible causes of the facts, for example saying ‘Look, the streets are wet so it must have been raining.’ compare a prioriWord Originearly 17th cent.: Latin, ‘from what comes after’.
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a posteriori