/ Dictionary / Index S Sexagesima: Meaning and Definition of Find definitions for: Sex•a•ges•i•ma Pronunciation: (sek"su-jes'u-mu, -jā'zu-), [key] — n. the second Sunday before Lent. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sexagenary sexagesimal 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