/ Dictionary / Index B biobehavioral: Meaning and Definition of Find definitions for: bi•o•be•hav•ior•al Pronunciation: (bī"ō-bi-hāv'yur-ul), [key] — adj. of or pertaining to the application of biological methods and ideas to the study of behavior in an attempt to understand emotions and reactions in terms of brain and physiological function. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bioavailability biobehavioral science 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