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.
Dermatologists recommend a vitamin C serum to help reduce hyperpigmentation, acne scars, and overall skin dullness. Alanna Martine Kilkeary, Glamour, 27 Apr. 2026 Oranges offer more vitamin C and slightly higher fiber content, which can further support immune health and digestion. Daryl Austin, USA Today, 26 Apr. 2026 Oranges are delectable fruits packed with vitamin C, but believe it or not, orange peels have several benefits for your garden. Michelle Mastro, Martha Stewart, 25 Apr. 2026 Sunscreen pairs particularly well with antioxidants like vitamin C for layered daytime protection. Lauren Jarvis-Gibson, Sacbee.com, 24 Apr. 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 30 Apr. 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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