/ Dictionary / Index A amitriptyline: Meaning and Definition of Find definitions for: am•i•trip•ty•line Pronunciation: (am"i-trip'tu-lēn", -līn", -lin), [key] — n. Pharm. a white crystalline powder, CHN, used to treat depression and enuresis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: amitriptyline (Thesaurus) amitosis Amittai Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language