/ Dictionary / Index B behavior modification: Meaning and Definition of Find definitions for: behav'ior modifica"tion Pronunciation: [key] — Psychol. Psychol. the direct changing of unwanted behavior by means of biofeedback or conditioning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. behaviorism behavior pattern Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language