vitamin C

noun

: a water-soluble vitamin C6H8O6 found in plants and especially in fruits and leafy vegetables or made synthetically and used in the prevention and treatment of scurvy and as an antioxidant for foods

called also ascorbic acid

Examples of vitamin C in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
High doses of vitamin C can upset your stomach. Emily Kay Votruba, EverydayHealth.com, 7 Apr. 2026 Cauliflower offers slightly more vitamin C, potassium, and protein, while cabbage provides more fiber and calcium. Heather Jones, Verywell Health, 2 Apr. 2026 Supplements, amino acid-rich foods, and vitamin C-rich foods may support collagen intake and your body’s collagen production. Carrie Madormo, Health, 31 Mar. 2026 Similarly, vitamin C remains a staple for protecting against environmental damage. Claire Dodds, MSNBC Newsweek, 30 Mar. 2026 See All Example Sentences for vitamin C

Word History

First Known Use

circa 1920, in the meaning defined above

Time Traveler
The first known use of vitamin C was circa 1920

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Cite this Entry

“Vitamin C.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vitamin%20C. Accessed 9 Apr. 2026.

Kids Definition

vitamin C

noun
: a vitamin that is present especially in citrus fruits, tomatoes, and green vegetables and is needed by the body to prevent scurvy

called also ascorbic acid

Medical Definition

vitamin C

noun
: a water-soluble vitamin C6H8O6 found in plants and especially in fruits and leafy vegetables or made synthetically and used in the prevention and treatment of scurvy and as an antioxidant for foods

called also ascorbic acid

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