post- Look up post- at Dictionary.com
word-forming element meaning "after," from Latin post "behind, after, afterward," from *pos-ti (cognates: Arcadian pos, Doric poti "toward, to, near, close by;" Old Church Slavonic po "behind, after," pozdu "late;" Lithuanian pas "at, by"), from PIE *apo- (cognates: Greek apo "from," Latin ab "away from" see apo-).