avidin

[ av-i-din, uh-vid-in ]
/ ˈæv ɪ dɪn, əˈvɪd ɪn /

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 of avidin

1940–45; avid + (biot)in; so named from its affinity for biotin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for avidin

avidin
/ (ˈævɪdɪn, əˈvɪdɪn) /

noun

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 for avidin

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

Medical definitions for avidin

avidin
[ ăvĭ-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.