Dictionary.com
Thesaurus.com

vitamin C

American  
vitamin C British  

noun

  1. another name for ascorbic acid

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

vitamin C Scientific  
  1. A water-soluble vitamin important for healthy skin, teeth, bones, and blood vessels. It is found especially in citrus fruits, tomatoes, potatoes, and green leafy vegetables. A deficiency of vitamin C in the diet causes scurvy. Also called ascorbic acid. Chemical formula: C 6 H 8 O 6 .


Etymology

Origin of vitamin C

First recorded in 1920–25

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

However, the researchers emphasize that this was an observational study, meaning it cannot determine whether vitamin C directly causes these differences in brain structure or function.

From Science Daily Jul. 1, 2026

While the findings do not prove that vitamin C protects the brain, they strengthen evidence that good nutrition could play a role in maintaining cognitive health later in life.

From Science Daily Jul. 1, 2026

"I was on high doses of vitamin C, vitamin D, turmeric, a special de-bloat supplement and I would regularly drink water with electrolytes in," Ginger explains.

From BBC Jun. 20, 2026

In addition to vitamin C, guava also provides vitamin A, folate, dietary fiber, and small amounts of iron.

From Science Daily May 27, 2026

Scurvy, the depletion of vitamin C, or ascorbic acid, had always been a problem on long voyages and had contributed to Captain Scott’s death en route from the South Pole.

From "Shipwreck at the Bottom of the World" by Jennifer Armstrong

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training