/ Dictionary / Index O onychophagia: Meaning and Definition of Find definitions for: on•y•cho•pha•gia Pronunciation: (on"i-kō-fā'ju, -jē-u), [key] — n. Psychiatry. the practice of biting one's nails, esp. when done habitually and as a symptom of emotional disturbance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. onychia onychophoran Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language