/ Dictionary / Index C creatinine: Meaning and Definition of Find definitions for: cre•at•i•nine Pronunciation: (krē-at'n-ēn", -in), [key] — n. Biochem. a crystalline end product of creatine metabolism, CHNO, occurring in urine, muscle, and blood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. creatine phosphate creation Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language