Definition of biotin in English:

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Pronunciation: /ˈbʌɪətɪn/


[mass noun] Biochemistry
A vitamin of the B complex, found in egg yolk, liver, and yeast. It is involved in the synthesis of fatty acids and glucose. Also called vitamin H, especially in North America.
Example sentences
  • Another feed may list 12 percent crude protein, 7 percent crude fat, and lysine, methionine, biotin, vitamin E and thiamin levels on the tag.
  • On the other hand, there are examples of algae that require other vitamins like thiamine and biotin.
  • Interaction has been measured in this way for ligand-receptor pairs of biotin and avidin, complementary DNA pairs, and antigen-antibody pairs.


1930s: coined in German from Greek bios 'life' + -in1.

For editors and proofreaders

Line breaks: bio¦tin

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