bi·​o·​tin | \ ˈbī-ə-tən How to pronounce biotin (audio) \

Definition of biotin

: 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 is probably because most people get enough biotin in the diet, so a supplement doesn’t really add much. Dr. Keith Roach, oregonlive, 26 June 2021 Its fast-acting formula contains all of the star ingredients that our derms say are most effective in growth serums: peptides, panthenol, biotin, and keratin. Chelsey Hamilton,, 16 Oct. 2019 Healthy hair requires adequate nutrients, especially things like vitamin D and biotin (vitamin B7). Dina Cheney, SELF, 13 Dec. 2019 Be on the look out for products with ingredients like peptides, vitamins (like biotin!), and natural oils (especially castor oil), all of which can add strength and shine to your lashes. Katie Bourque, Good Housekeeping, 4 Nov. 2019 Highest-Rated: Pronexa LavishLash Eyelash and Brow Serum This best-selling lash and brow enhancer features biotin—a star ingredient for hair regrowth benefits, according to Dr. Jaliman—to stimulate hair growth and thicken your arches. Chelsey Hamilton,, 16 Oct. 2019 One of the most common ingredients advertised on hair growth shampoo bottles is biotin, a B-vitamin found in egg yolks, liver, and yeast thought to strengthen hair and nail proteins. Abigail Whittington, Good Housekeeping, 28 Aug. 2019 The brand claims the wand gives maximum lift and separation while the super-black formula uses collagen, biotin, and peptides to condition the lashes. Jessica Kasparian, USA TODAY, 29 Nov. 2019 Nutritionally coconut water does contain some nutrients, including the B vitamins Riboflavin (B2), Niacin (B3), pantothenic acid, folic acid, biotin, as well as trace amounts of thiamin (B1), Vitamin C, potassium, and sodium. Alexandra Hansen, Quartzy, 5 Nov. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biotin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of biotin

1936, in the meaning defined above

History and Etymology for biotin

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

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biotic province



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Cite this Entry

“Biotin.” Dictionary, Merriam-Webster, Accessed 26 Nov. 2021.

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More Definitions for biotin


bi·​o·​tin | \ ˈbī-ət-ən How to pronounce biotin (audio) \

Medical Definition of biotin

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

called also vitamin H

More from Merriam-Webster on biotin Encyclopedia article about biotin


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