biotin

noun

bi·​o·​tin ˈbī-ə-tən 

: a colorless crystalline growth vitamin C₁₀H₁₆N₂O₃S of the vitamin B complex found especially in yeast, liver, and egg yolk

Examples of biotin in a Sentence

Recent Examples on the Web

Even supplements such as Nutrafol contain biotin which can elevate hormone levels, so the sisters are careful and consult with their physicians. — Laura Trujillo, USA Today, 30 June 2026

Careful study revealed that three of the clusters produce antibiotics molecules—stravidins, acidomycins, dapamycins—that each thwart a different enzyme in the biotin biosynthesis pathway. — Beth Mole, ArsTechnica, 26 June 2026

The refreshing formula combines rosemary, Korean pine leaf, salicylic acid, and cooling menthol to clear away buildup, while caffeine, biotin, and fermented ingredients like Bifida and Lactobacillus keep the scalp balanced. — Christa Joanna Lee, Allure, 24 June 2026

But what biotin can’t do for hair growth, rosemary oil may be able to. — Erika Reals, InStyle, 24 June 2026

Word History

Etymology

International Scientific Vocabulary, from Greek biotos life, sustenance; akin to Greek bios

First Known Use

1936, in the meaning defined above

Kids Definition

biotin

noun

bi·​o·​tin ˈbī-ə-tən 

: a growth vitamin of the vitamin B complex found especially in yeast, liver, and egg yolk

Medical Definition

biotin

noun

bi·​o·​tin ˈbī-ət-ən 

: a colorless crystalline growth vitamin C₁₀H₁₆N₂O₃S of the vitamin B complex found especially in yeast, liver, and egg yolk

called also vitamin H