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Houghton Mifflin

bi·o·tin  audio  (b-tn) KEY 

NOUN:
A colorless crystalline vitamin, C10H16N2O3S, of the vitamin B complex, essential for the activity of many enzyme systems and found in large quantities in liver, egg yolk, milk, and yeast.

ETYMOLOGY:
Greek bitos, life ; see biotic + -in


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