Definition of avidin in English:


Pronunciation /ˈavədən/ /ˈævədən/

See synonyms for avidin


  • A protein found in raw egg white, which combines with biotin and hinders its absorption.

    ‘The latter is due to the affinity of the egg white protein, avidin, for biotin preventing intestinal absorption of the biotin.’
    • ‘By cooking eggs, for example, you detoxify avidin, an egg-white protein that destroys biotin.’
    • ‘Groundwater, too, is protected from contamination because avidin is a biodegradable protein.’
    • ‘The reactivity could be weakened by pretreatment with avidin and biotin.’
    • ‘The endogeneous biotin was blocked by adding an excess amount of avidin followed by washing and addition of free biotin.’


1940s from avid+ -in.