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.
This antioxidant-rich formula pairs vitamin C with ferulic acid to brighten skin, refine texture, and even out tone. Sarah Han, Allure, 27 Jan. 2026 Hyaluronic acid and jojoba oil provide moisture without heaviness, while vitamin C works to reduce discoloration and even skin tone. Ritu Upadhyay, Footwear News, 26 Jan. 2026 Carrot juice is much higher in vitamin A, beta carotene, vitamin C, and vitamin K, while beet juice provides more folate and natural nitrates linked to blood flow and blood pressure support. Heather Jones, Verywell Health, 26 Jan. 2026 These beneficial ingredients include things like collagen for healthy skin and vitamin C for immune-boosting benefits. Bestreviews, Mercury News, 26 Jan. 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 29 Jan. 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

More from Merriam-Webster on vitamin C

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