Definition of "postdate"

postdate

/ˈpəʊstˌdeɪt/

verb
third-person singular simple present postdates, present participle postdating, simple past and past participle postdated
1. (transitive) To occur after an event or time; to exist later on in time
  Quotations
  Because these prophecies of Isaiah postdate the fall of Babylon (539 B.C.E), they probably refer to that event.
  2001, David L. Lieber, Jules Harlow, Etz Hayim: Torah and Commentary, page 37
2. (transitive) To assign an effective date to a document or action later than the actual date
3. (transitive) To affix a date to after the event.
adjective
not comparable
1. (obsolete) postdated; made or done after the date assigned.
noun
plural postdates
1. A date on a document later than the real date on which it was written.