/ Dictionary / Index B behavioral science: Meaning and Definition of Find definitions for: behav'ioral sci'ence Pronunciation: [key] a science or branch of learning, as psychology or sociology, that derives its concepts from observation of the behavior of living organisms. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. behavior behaviorism Related Content Daily Word Quiz: anecdote Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language