/ Dictionary / Index O Octavius: Meaning and Definition of Find definitions for: Oc•ta•vi•us Pronunciation: (ok-tā'vē-us), [key] — n. a male given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Octavian octavo Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language