biotin

== English == === Etymology === Borrowed from German Biotin, from Ancient Greek βίοτος (bíotos, “life”) + the suffix -in. === Pronunciation === IPA(key): /ˈbaɪətɪn/ === Noun === biotin (countable and uncountable, plural biotins) (biochemistry) A sulfur-containing member of the vitamin B complex, 5-[(3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanoic acid, found in liver, egg yolk, milk, and yeast, essential to the activity of multiple enzyme systems. ==== Synonyms ==== vitamin B7 vitamin H ==== Derived terms ==== ==== Translations ====