/ Dictionary / Index B biobehavioral science: Meaning and Definition of Find definitions for: bi'obehav'ioral sci'ence Pronunciation: [key] any of the various branches of the life sciences, as neurobiology, neurochemistry, or neuroendocrinology, that deal with biological aspects of behavior. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. biobehavioral biobibliography Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language