/ Dictionary / Index S sextic: Meaning and Definition of Find definitions for: sex•tic Pronunciation: (sek'stik), [key] — Math. Math. —adj. of the sixth degree. —n. a quantity of the sixth degree. an equation of the sixth degree. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sex therapy sextile Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language