WordReference Random House Unabridged Dictionary of American English © 2026
cre•at•i•nine
(krē at′n ēn′, -in),USA pronunciation n. [Biochem.]
- Biochemistrya crystalline end product of creatine metabolism, C4H7N3O, occurring in urine, muscle, and blood.
- German Kreatinin, equivalent. to kreatin creatine + -in -ine2
- 1850–55