/ Dictionary / Index B biotransformation: Meaning and Definition of Find definitions for: bi•o•trans•for•ma•tion Pronunciation: (bī"ō-trans"fur-mā'shun), [key] — n. the series of chemical changes occurring in a compound, esp. a drug, as a result of enzymatic or other activity by a living organism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. biotope biotron 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