/ Dictionary / Index A apocalypticism: Meaning and Definition of Find definitions for: a•poc•a•lyp•ti•cism Pronunciation: (u-pok"u-lip'tu-siz"um), [key] — n. Theol. any doctrine concerning the end of the temporal world, esp. one based on the supposed prophetic passages in the Revelation of St. John the Divine. the millennial doctrine of the Second Advent and personal reign of Jesus Christ on earth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. apocalyptic apocalyptist Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language