/ Dictionary / Index S sextuplex: Meaning and Definition of Find definitions for: sex•tu•plex Pronunciation: (seks'too-pleks", -tyoo-, seks-t'pleks, -ty'-, -tup'leks), [key] — adj. sixfold; sextuple. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sextuplet sextuplicate Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language