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[bahy-oh-sin-thuh-sis] /ˌbaɪ oʊˈsɪn θə sɪs/
noun, Biochemistry
the formation of chemical compounds by a living organism.
the laboratory preparation of biological molecules by the use of reagents or catalysts derived from natural substances and modeled on a series of reactions occurring in a living organism.
1925-30; bio- + synthesis Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for biosynthesis
  • Convergent evolution in biosynthesis of cyanogenic defence compounds in plants and insects.
British Dictionary definitions for biosynthesis


the formation of complex compounds from simple substances by living organisms
Derived Forms
biosynthetic (ˌbaɪəʊsɪnˈθɛtɪk) adjective
biosynthetically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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biosynthesis in Medicine

biosynthesis bi·o·syn·the·sis (bī'ō-sĭn'thĭ-sĭs)
Formation of a chemical compound by a living organism. Also called biogenesis.

bi'o·syn·thet'ic (-thět'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for biosynthesis


the sequences of enzyme-catalyzed reactions by which relatively complex molecules are formed in living cells from nutrients with relatively simple structures. Anabolic processes, which include the synthesis of such cell components as carbohydrates, proteins, and lipids, require energy in the form of energy-rich compounds (e.g., adenosine triphosphate) that are produced during breakdown processes (see catabolism). In growing cells, anabolic processes dominate over catabolic ones; in nongrowing cells, a balance exists between the two

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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