/ Dictionary / Index A apostolic age: Meaning and Definition of Find definitions for: ap'ostol'ic age' Pronunciation: [key] the earliest period of Christianity, lasting through the death of the last apostle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. apostolic Apostolic Church Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language