/ Dictionary / Index A apostolic succession: Meaning and Definition of Find definitions for: apostol'ic succes'sion Pronunciation: [key] — Rom. Cath. Ch., Orth. Ch., Anglican Ch. Rom. Cath. Ch.,Orth. Ch.,Anglican Ch. the unbroken line of succession beginning with the apostles and perpetuated through bishops, considered essential for orders and sacraments to be valid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Apostolic See apostolic vicar Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language