(Christianity) Pertaining to the belief that the Second Coming will take place after the millennium. / Pertaining to the period following the year 1000 or (now more usually) following the year 2000.

(Christianity) An interpretation of the Book of Revelation where Christ's second coming will be after the "Millennium", a Golden Age or era of prosperity and dominance of Christianity.

plural of postmillennialist

A proponent of postmillennialism.