/ Dictionary / Index S sexenary: Meaning and Definition of Find definitions for: sex•e•nar•y Pronunciation: (sek'su-ner"ē), [key] — adj. senary. sextuple (def. 1). (of a numerical system) with a base of six. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sexed-up sexennial 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