/ Dictionary / Index O orate fratres: Meaning and Definition of Find definitions for: o•ra•te fra•tres Pronunciation: (ô-rä'te frä'tres), [key] — Rom. Cath. Ch. Rom. Cath. Ch. the call to prayer, addressed by the celebrant of the Mass to the people just before the Secret. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orate oration Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language