/ Dictionary / Index O octangle: Meaning and Definition of Find definitions for: oc•tan•gle Pronunciation: (ok'tang-gul), [key] — adj. octangular. —n. octagon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. octane number octangular Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language