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noun Biochemistry.
a crystalline, water-soluble vitamin, C10H16O3N2S, of the vitamin B complex, that is present in all living cells and functions as a growth factor and as a catalyst in carboxylation reactions.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Biotin
is always a great word to know.
So is chlorine. Does it mean:
| Symbol: Ge; atomic weight: 72.59; atomic number: 32 |
| Symbol: Cl; atomic weight: 35.453; atomic number: 17 |
Collins
World English Dictionary
| biotin (ˈbaɪətɪn) | |
| —n | |
| See also avidin a vitamin of the B complex, abundant in egg yolk and liver, deficiency of which causes dermatitis and loss of hair. Formula: C10H16N2O3S | |
| [C20: biot- from Greek biotē life, way of life + | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
biotin
1936, from Ger. Biotin (1936), from Gk. biotos "life" (see bio-) + chemical suffix -in (-ine).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
biotin bi·o·tin (bī'ə-tĭn)
n.
A colorless crystalline vitamin of the vitamin B complex, essential for the activity of many enzyme systems and found in large quantities in liver, egg yolk, milk, and yeast.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
biotin  (bī'ə-tĭn) Pronunciation Key
A water-soluble organic acid belonging to the vitamin B complex that is important in the metabolism of carbohydrates and fatty acids. It is also a cofactor for some coenzymes that catalyze the synthesis of organic acids in the body. Biotin is found in liver, egg yolks, milk, yeast, and some vegetables. Chemical formula: C10H16N2O3S. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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