/ Dictionary / Index T trichotillomania: Meaning and Definition of Find definitions for: trich•o•til•lo•ma•ni•a Pronunciation: (trik"u-til"u-mā'nē-u), [key] — n. Psychiatry. a compulsion to pull out one's hair. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trichotillomania (Thesaurus) trichothecene trichotomy Related Content Daily Word Quiz: wizened Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language