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

Featuring collagen, biotin and zinc, these once-daily ampoules aim to improve skin health and elasticity. —Noor Lobad, Footwear News, 19 Nov. 2025

The formula features keratin and biotin to help improve damage, dryness, and split ends over time. —Ariana Yaptangco, Glamour, 18 Nov. 2025

Most people get enough biotin from food, but low levels can lead to symptoms like thinning hair, brittle nails, or dry skin. —Lindsay Curtis, Verywell Health, 12 Nov. 2025

Rich in nutrients and healthy fats, peanut butter is a nourishing food that contains vitamins such as biotin, folate, and vitamin E, and minerals such as magnesium and potassium. —Laura Schober, Health, 27 Oct. 2025

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