Definition from Wiktionary, the free dictionary - IPA:
/pɹoʊˈlɛptɪk/ - Of a calendar, extrapolated to dates prior to
its first adoption; of those used to adjust to or from the
Julian calendar or Gregorian calendar. - Describes an event as
having been assigned too early a date. - (rhetoric) Anticipating
and answering objections before they have been raised;
procataleptic. - 1989. W. Paul Jones. Theological Worlds
Abingdon Press, Nashville, p. 151: - In World Two, Jesus can be
seen as the proleptic event, giving promise of God's vindication
of creation in and through history. Derived terms  a calendar
extrapolated to dates prior to its first adoption