/ Dictionary / Index O Orosius: Meaning and Definition of Find definitions for: O•ro•si•us Pronunciation: (ô-rō'zhē-us), [key] fl. 5th centurya.d., Spanish theologian and historian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oropharynx orotund Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language