: 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
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Both sulfur and biotin (a type of vitamin B) can be found in eggs.
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Marie Bladt, Vogue, 13 June 2025
This Amazon choice product comes in a grape flavor, contains antioxidants and biotin, and reviews support impressive hair and nail growth.
—Bestreviews, Chicago Tribune, 12 June 2025
At-home remedies include scalp massages with nutrient-rich topicals, as well as hair-specific supplements with biotin, zinc and collagen peptides.
—Kaleigh Werner, Footwear News, 2 June 2025
Changes in nail texture may reflect nutritional deficiencies—including low levels of iron, biotin, zinc, magnesium, or vitamin B12—or systemic illnesses such as thyroid disorders, autoimmune diseases, or liver and kidney dysfunction.
—Lydia Patrick, MSNBC Newsweek, 22 May 2025
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Marie Bladt, Vogue, 13 June 2025
This Amazon choice product comes in a grape flavor, contains antioxidants and biotin, and reviews support impressive hair and nail growth.
—Bestreviews, Chicago Tribune, 12 June 2025
At-home remedies include scalp massages with nutrient-rich topicals, as well as hair-specific supplements with biotin, zinc and collagen peptides.
—Kaleigh Werner, Footwear News, 2 June 2025
Changes in nail texture may reflect nutritional deficiencies—including low levels of iron, biotin, zinc, magnesium, or vitamin B12—or systemic illnesses such as thyroid disorders, autoimmune diseases, or liver and kidney dysfunction.
—Lydia Patrick, MSNBC Newsweek, 22 May 2025
See All Example Sentences for biotin
Cite this Entry
“Biotin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biotin. Accessed 4 Jul. 2025.
Copy CitationKids 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
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