/ Dictionary / Index S sexagenary: Meaning and Definition of Find definitions for: sex•ag•e•nar•y Pronunciation: (sek-saj'u-ner"ē), [key] — adj., n., pl. -nar•ies. —adj. of or pertaining to the number 60. composed of or proceeding by sixties. sexagenarian. —n. a sexagenarian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sexagenarian Sexagesima Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language