/ Dictionary / Index B biosynthetic: Meaning and Definition of Find definitions for: bi•o•syn•thet•ic Pronunciation: (bī"ō-sin-thet'ik), [key] — adj. Biochem. of or pertaining to biosynthesis. of or pertaining to a substance produced by a biosynthetic process. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: biosynthetic (Thesaurus) biosynthesis biota Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language