/ Dictionary / Index O octavalent: Meaning and Definition of Find definitions for: oc•ta•va•lent Pronunciation: (ok"tu-vā'lunt), [key] — adj. Chem. having a valence of eight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. octateuch octave Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language