/ Dictionary / Index A Apostolos: Meaning and Definition of Find definitions for: A•pos•to•los Pronunciation: (ä-pôs'tô-lôs Eng. &schwa-pos'tl-os&sec), [key] — n. Gk. Orth. Ch. a book containing parts of the Epistles and parts of the Acts of the Apostles. a reading from this book. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. apostolic vicar apostrophe Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language