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.
Key Takeaways Lemon peel contains vitamin C, plant compounds, and aromatic oils that may boost the antioxidant content of lemon water. Kathleen Ferraro, Verywell Health, 9 Mar. 2026 Citrus fruits provide vitamin C and flavonoids that help maintain collagen and protect against oxidative stress. Lynn Andriani, Martha Stewart, 9 Mar. 2026 Juice may raise vitamin C levels in the blood more quickly than whole fruit. Lindsey Desoto, Health, 5 Mar. 2026 When the skin barrier is healthy, treatment ingredients such as retinoids, vitamin C, and peptides can work more effectively without triggering unnecessary inflammation or dryness. Iman Balagam, Vogue, 3 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 13 Mar. 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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