/ Dictionary / Index S sexennial: Meaning and Definition of Find definitions for: sex•en•ni•al Pronunciation: (sek-sen'ē-ul), [key] — adj. of or for six years. occurring every six years. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sexenary sexfoil Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language