/ Dictionary / Index S saponification number: Meaning and Definition of Find definitions for: saponifica'tion num"ber Pronunciation: [key] — Chem. Chem. the number of milligrams of potassium hydroxide required to saponify one gram of a given ester, esp. a glyceride. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. saponaceous saponify 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