Breadcrumb Home > Dictionary > Index O octagonal: Meaning and Definition of Find definitions for: oc•tag•o•nal Pronunciation: (ok-tag'u-nl), [key] — adj. having eight angles and eight sides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: octagonal (Thesaurus) octagon octagon house TrendingHere are the facts and trivia that people are buzzing about. Did Birds Evolve from Dinosaurs? The Twelve Dancing Princesses Current Events This Week: January 2023 African Americans by the Numbers Andersen's Fairy Tales: Contents The Celtic Twilight: A Teller of Tales ✖ Related Content Daily Word Quiz: hubris Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language