1. Reversal of normal order of two words or sentences etc. (as in 'bred and born')
   "The phrase 'put on your shoes and socks' is an example of hysteron proteron, as socks are typically put on before shoes"
    
2. The logical fallacy of using as a true premise a proposition that is yet to be proved
   "His argument contained a hysteron proteron, assuming the conclusion in one of his premises"

Type of: logical fallacy, rhetorical device

Encyclopedia: Hysteron proteron