/ Dictionary / Index B beta-indoleacetic acid: Meaning and Definition of Find definitions for: be'ta-in•dole•a•ce'tic ac'id Pronunciation: (bā'tu-in"dōl-u-sē'tik, -u-set'ik or, esp. Brit., bē'-), [key] — Biochem. Biochem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. beta globulin betaine Related Content Daily Word Quiz: frowzy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language