a vitamin of the B complex, abundant in egg yolk and liver, deficiency of which causes dermatitis and loss of hair. Formula: C10H16N2O3S
See also avidin
Word origin
C20: biot- from Greek biotē life, way of life + -in
biotin in American English
(ˈbaɪətɪn)
noun
a bacterial growth factor, C10H16O3N2S, present in all living things; vitamin H: it is one of the vitamin B group and is found inliver, egg yolk, yeast, etc.