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

This clear formula combines strong hold with moisture-rich ingredients like flaxseed oil, rosemary leaf oil, marshmallow root extract, biotin, and aloe to smooth edges and boost shine without drying strands. —Jailynn Taylor, Allure, 2 Apr. 2025

The slightly curved wand coats each lash in nourishing ingredients—biotin helps to fortify lashes to protect against breakage, while antioxidant-rich ingredients like peptides, vitamin E, and panthenol help to condition and hydrate. —Conçetta Ciarlo, Vogue, 26 Mar. 2025

Key nutrients, like omega-3 fatty acids, biotin, and other vitamins, are essential for growing hair. —Julie Marks, Verywell Health, 20 Mar. 2025

This vegetarian, non-GMO and gluten-free liquid biotin for hair growth is the perfect choice. —Maria Correa, Miami Herald, 3 Mar. 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