/ Dictionary / Index O octangular: Meaning and Definition of Find definitions for: oc•tan•gu•lar Pronunciation: (ok-tang'gyu-lur), [key] — adj. having eight angles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: octangular (Thesaurus) octangle octanoic acid Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language