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
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The formula also includes antioxidants like vitamin C, vitamin E, and cranberry fruit extract that help to brighten, hydrate, and protect your skin from environmental damage. Essence Wiley, InStyle, 1 July 2026 Blackberries Blackberries are rich in antioxidant compounds, including vitamin C, vitamin E, anthocyanins, ellagic acid, quercetin, and terpenoids. Brian Mastroianni, Health, 28 June 2026 Pineapple is high in vitamin C and manganese, and can be a healthy food for dogs to eat. Madeline Gunderson, USA Today, 26 June 2026 The rich blend of shea butter, murumuru butter, coconut oil, and vitamin C coats lips in lasting moisture overnight. Christa Joanna Lee, Allure, 24 June 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 6 Jul. 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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