WordReference Random House Unabridged Dictionary of American English © 2026
pro•trip•ty•line
(prō trip′tl ēn′, -in),USA pronunciation n. [Pharm.]
- Drugsa white to yellow powder, C19H21N, used for the treatment of depression.
- pro(pyl) + tri- + (he)ptyl (see heptane, -yl) + -ine2 1960–65