: 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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The fruit contains vitamins C and B6, potassium, magnesium, fiber, and biotin, according to PetMD.
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Kelsey Monstrola, USA Today, 12 July 2025
Some of the above changes to hair texture and density can also stem from health issues—certain conditions like hyper- and hypothyroidism and diabetes can cause shedding or thinning, as can deficiencies in nutrients including iron, biotin, vitamin D, and zinc.
—Erica Sloan, SELF, 9 July 2025
Infused with scalp-friendly ingredients such as green tea extract and biotin, Divi’s root touch-up applies color with soothing and hydrating ingredients.
—Neha Tandon, Glamour, 12 May 2025
In addition to vitamin B7 (biotin), the supplements include marine collagen peptides to help strengthen and hydrate, adaptogenic ashwagandha to calm stress hormones’ effects on hair growth, and saw palmetto, which combats thinning by reducing the hair-thinning hormone DHT.
—Emily Orofino, Vogue, 29 June 2025
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Kelsey Monstrola, USA Today, 12 July 2025
Some of the above changes to hair texture and density can also stem from health issues—certain conditions like hyper- and hypothyroidism and diabetes can cause shedding or thinning, as can deficiencies in nutrients including iron, biotin, vitamin D, and zinc.
—Erica Sloan, SELF, 9 July 2025
Infused with scalp-friendly ingredients such as green tea extract and biotin, Divi’s root touch-up applies color with soothing and hydrating ingredients.
—Neha Tandon, Glamour, 12 May 2025
In addition to vitamin B7 (biotin), the supplements include marine collagen peptides to help strengthen and hydrate, adaptogenic ashwagandha to calm stress hormones’ effects on hair growth, and saw palmetto, which combats thinning by reducing the hair-thinning hormone DHT.
—Emily Orofino, Vogue, 29 June 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 30 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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