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avidin

[av-i-din, uh-vid-in] /ˈæv ɪ dɪn, əˈvɪd ɪn/
noun, Biochemistry
1.
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.
Origin
1940-1945
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. 2014.
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British Dictionary definitions for avidin

avidin

/ˈævɪdɪn; əˈvɪdɪn/
noun
1.
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
Word Origin
C20: from avid + (bio)in; from its characteristic avidity for biotin
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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avidin in Medicine

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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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