av·i·din ( v  -dn)n. A protein found in uncooked egg white that binds to and inactivates biotin. An abundance of avidin in the diet can result in a deficiency of biotin. |
avidin [ˈævɪdɪn əˈvɪdɪn]
n
(Life Sciences & Allied Applications / Biochemistry) 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
[from avid + (bio)in; from its characteristic avidity for biotin]
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