[bahy-uh-tin] 
| a crystalline, water-soluble vitamin, C10H16O3N2S, of the vitamin B complex, that is present in all living cells and functions as a growth factor and as a catalyst in carboxylation reactions. |
| bi·o·tin (bī'ə-tĭn) n. 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. [Greek biōtos, life; see biotic + -in.] |
biotin bi·o·tin (bī'ə-tĭn)
n.
A colorless crystalline vitamin 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.
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