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

Parsley Parsley is a good source of vitamin C and carotenoids, antioxidants that give plants their coloring. —Lauren Panoff, Verywell Health, 11 Dec. 2025

During cold and flu season, there’s lots of chatter about whether vitamin C or vitamin D is better for fighting off infections. —Jamie Ducharme, Health, 9 Dec. 2025

By using your eye cream first (Masi and Dr. Jiménez both like the Collagen Bank Reviving Eye Cream from Neutrogena), the cream forms a barrier preventing the active ingredients of subsequent treatments from penetrating or irritating the skin (especially the likes of vitamin C or retinol). —Ana Morales, Vogue, 2 Dec. 2025

Formulated with skin-nourishing ingredients like vitamin C, collagen, and sodium hyaluronate (a sister to hyaluronic acid), the serum reduces signs of aging and supports collagen production, evens your skin complexion, and defends against free radicals. —Alicia Geigel, Southern Living, 27 Nov. 2025

Word History

First Known Use

circa 1920, in the meaning defined above

Rhymes for vitamin C

• abc
• absentee
• addressee
• adoptee
• agouti
• allottee
• amphorae
• amputee
• apc
• apogee
• appointee
• assessee

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