/ Dictionary / Index I interpersonal therapy: Meaning and Definition of Find definitions for: in'terper'sonal ther'apy Pronunciation: [key] a type of psychotherapy that focuses on conflicts in one's personal relationships. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. interpersonal theory interphase Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language