/ Dictionary / Index O octamerous: Meaning and Definition of Find definitions for: oc•tam•er•ous Pronunciation: (ok-tam'ur-us), [key] — adj. consisting of or divided into eight parts. (of flowers) having eight members in each whorl. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. octamer octameter 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