/ Dictionary / Index O Orthodoxy Sunday: Meaning and Definition of Find definitions for: Or'thodoxy Sun'day. Pronunciation: [key] See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orthodoxy orthoepy Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language