: 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 benefits of brewer’s yeast have been known for millennia and rival hair-growing supplements like biotin and folic acid.
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Beatrice Zocchi, Vogue, 16 Apr. 2025
Specific vitamins like biotin, iron, zinc, vitamin C, vitamin D, and vitamin B12 are essential for nail growth, adds Dr. Patel, and deficiencies can not only lead to slow-growing nails, but also brittle or ridged ones.
—Catharine Malzahn, Glamour, 3 Apr. 2025
It’s packed with conditioning ingredients like biotin, but comes in colors that are just as opaque as regular polish.
—Jessica Kasparian, SELF, 25 Feb. 2025
Loaded with ingredients like biotin and pro-vitamin B5 that help stimulate a healthier hair cycle, and coconut oil for extra shine, this shampoo was just the lacquer our hair needed.
—Alyssa Brascia, People.com, 30 Nov. 2024
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Beatrice Zocchi, Vogue, 16 Apr. 2025
Specific vitamins like biotin, iron, zinc, vitamin C, vitamin D, and vitamin B12 are essential for nail growth, adds Dr. Patel, and deficiencies can not only lead to slow-growing nails, but also brittle or ridged ones.
—Catharine Malzahn, Glamour, 3 Apr. 2025
It’s packed with conditioning ingredients like biotin, but comes in colors that are just as opaque as regular polish.
—Jessica Kasparian, SELF, 25 Feb. 2025
Loaded with ingredients like biotin and pro-vitamin B5 that help stimulate a healthier hair cycle, and coconut oil for extra shine, this shampoo was just the lacquer our hair needed.
—Alyssa Brascia, People.com, 30 Nov. 2024
See All Example Sentences for biotin
Cite this Entry
“Biotin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biotin. Accessed 23 Apr. 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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