avidin

[av-i-din, uh-vid-in]

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noun Biochemistry.

a protein, found in the white of egg, that combines with and prevents the action of biotin, thus injuring the animal that consumes it in excess by producing biotin deficiency.

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Origin:
1940–45; avid + (biot)in; so named from its affinity for biotin

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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Avidin is always a great word to know.

So is bismuth. Does it mean:

Symbol: Be; atomic weight: 9.0122; atomic number: 4

Symbol: Bi; atomic weight: 208.980; atomic number: 83

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Collins

World English Dictionary

avidin (ˈævɪdɪn, əˈvɪdɪn)

—n
	a protein, found in egg-white, that combines with biotin to form a stable compound that cannot be absorbed, leading to a biotin deficiency in the consumer

[C20: from avid + (bio)in; from its characteristic avidity for biotin]

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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American Heritage

Medical Dictionary

avidin av·i·din (āv'ĭ-dĭn)
n.
A protein, found in uncooked egg white, that binds to and inactivates biotin and which, when present in abundance, can result in a deficiency of biotin.

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