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.
Korean vitamin C serums are often better suited for sensitive skin types, but not always. Christa Joanna Lee, Allure, 9 May 2026 Your first thought might be, yes, to load up on vitamin C-rich foods, like oranges, and your omega-3s, but eggs are a heavy hitter, too. Mykenna Maniece, Vogue, 8 May 2026 This two-in-one Dove cream pulls double duty as a moisturizing lotion and a serum that’s packed with niacinamide, vitamin C, pro-retintol, and shea butter to minimize the appearance of dark spots, even your complexion, smoothen texture, and brighten the skin. Alicia Geigel, Southern Living, 3 May 2026 This green leafy veggie contains fiber, antioxidants, vitamin C, folate, potassium, magnesium—the list goes on. Sarah Bence, Verywell Health, 1 May 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 May. 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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