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biotin

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bi⋅o⋅tin

[bahy-uh-tin]
–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.
Also called vitamin H.


Origin:
1935–40; < G Biotin < Gk biot life + -in -in 2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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bi·o·tin   (bī'ə-tĭn)   
n.  A colorless crystalline vitamin, C10H16N2O3S, 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.

[Greek biōtos, life; see biotic + -in.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: bi·o·tin
Pronunciation: 'bI-&t-&n
Function: noun
: a colorless crystalline growth vitaminC10H16N2O3S of the vitamin B complex found especially in yeast, liver, and egg yolk called also vitamin H
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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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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