WordReference Random House Unabridged Dictionary of American English © 2025
hy•drox•y•pro•line
(hī drok′si prō′lēn, -lin),USA pronunciation n. [Biochem.]
- Biochemistrya nutritionally nonessential amino acid, C5H9NO3, found chiefly in collagen.
- hydroxy- + proline 1900–05