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Definitions

vitamin

[vahy-tuh-min, vit-uh-min] / ˈvaɪ tə mɪn, ˈvɪt ə mɪn /
NOUN
nutrient
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Even more surprising, the most effective way to target this factor may be an already approved and widely available treatment: vitamin B3.

From Science Daily • Mar. 24, 2026

About a quarter of U.S. adults wrongly believe vitamin A can prevent measles infections, according to a KFF poll conducted last year.

From Salon • Mar. 19, 2026

Common ingredients include hyaluronic acid to help with hydration, peptides for skin plumping, retinals for fine lines and vitamin C for brightening the under-eye area.

From Los Angeles Times • Mar. 18, 2026

Whilst exposure to small amounts of UV radiation is essential to produce vitamin D, the World Health Organization warns "overexposure may result in acute and chronic health effects on the skin, eye and immune system".

From BBC • Mar. 18, 2026

He pulled a small box of colorful vitamin C drops from his pocket and held it out to the mother—for the girls, he gestured.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin