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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
Citrus fruits are an excellent source of antioxidant vitamin C and contain a good amount of fiber.
—
Dr. Uma Naidoo, Contributor, CNBC, 4 Feb. 2025
That’s the especially effective pure form of vitamin C, beloved by dermatologists for its ability to make skin smoother and more radiant.
—
Allure Editors, Allure, 1 Feb. 2025
Oranges Usually known for their vitamin C content, oranges are also good sources of fiber.
—
Cristina Mutchler, Verywell Health, 29 Jan. 2025
In fact, the body needs only a certain amount of vitamin C to function properly, and any excess is simply excreted.
—
Aimee Pugh Bernard, The Conversation, 28 Jan. 2025
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Word History
First Known Use
circa 1920, in the meaning defined above
Dictionary Entries Near vitamin C
Cite this Entry
“Vitamin C.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vitamin%20C. Accessed 11 Feb. 2025.
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
Britannica.com: Encyclopedia article about vitamin C
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