/ Dictionary / Index O octosyllabic: Meaning and Definition of Find definitions for: oc•to•syl•lab•ic Pronunciation: (ok"tō-si-lab'ik), [key] — adj. consisting of or pertaining to eight syllables. —n. an octosyllable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: octosyllabic (Thesaurus) octoroon octosyllable Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language