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

Canned Salmon People who follow a pescatarian diet, or prefer to consume seafood in place of other types of meat, might consider opting for salmon to get a dose of biotin. —Cristina Mutchler, Verywell Health, 31 Dec. 2025

The formula is infused with biotin to support stronger, healthier hair over time, as well as coconut and babassu seed oils to replenish moisture and vitality in weak strands. —Jamie Allison Sanders, PEOPLE, 26 Dec. 2025

Men with fine or thinning hair may prefer lightweight formulas with ingredients like caffeine or biotin. —Malia Griggs, Glamour, 23 Dec. 2025

Proteins, vitamins, and minerals like biotin, iron, and omega-3s are all known to help keep nails strong. —Audrey Noble, Vogue, 5 Dec. 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