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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.

He was given supplements containing vitamin D3 – also known as colecalciferol – to raise the levels in his blood.

From BBC • Apr. 16, 2026

Blood tests showed him to be fit and healthy apart from a slightly lower than normal level of vitamin D.

From BBC • Apr. 16, 2026

The mutation appears to enhance the activity of enzymes that convert vitamin A into its active forms.

From Science Daily • Apr. 15, 2026

Chemists have achieved what many once considered impossible by stabilizing an extremely reactive molecule in water, confirming a 67-year-old theory about vitamin B1.

From Science Daily • Apr. 11, 2026

She then reached in, pulled out an identical decoy box filled with real vitamin tablets, and offered some to her children, who accepted eagerly.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau




Vocabulary lists containing vitamin