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

Common ingredients include hyaluronic acid to help with hydration, peptides for skin plumping, retinals for fine lines and vitamin C for brightening the under-eye area. —Deborah Vankin, Los Angeles Times, 18 Mar. 2026

Grapefruits and grapefruit juice can both help boost your immune system with their vitamin C content, though whole grapefruits have more antioxidants. —Zia Sherrell, Health, 16 Mar. 2026

My derm recommended using vitamin C products (in conjunction with SPF) in the morning to not only help with the side effects, but to enhance my complexion (think brighter, younger, healthier-looking skin). —Gina Vaynshteyn, StyleCaster, 13 Mar. 2026

Every skin care-makeup hybrid is formulated with serum-strength actives like vitamin C, hyaluronic acid, peptides and ceramides to hydrate and repair. —Tory Johnson, ABC News, 12 Mar. 2026

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