/ Dictionary / Index K ketolysis: Meaning and Definition of Find definitions for: ke•tol•y•sis Pronunciation: (ki-tol'u-sis), [key] — pl. -ses the breaking down of ketones. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ketohexose ketone Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language