Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “vitamin C”

vitamin C

noun [U]    
a vitamin found in foods such as citrus fruit , green vegetables with a lot of leaves , tomatoes , and potatoes . It is important for healthy bones , joints , teeth , and gums (= the part of the mouth from which the teeth grow ), and for fighting infection . → Synonym ascorbic acidVitamins and minerals
(Definition of vitamin C noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of vitamin C

Translations of “vitamin C”

Word of the Day


a good knowledge of something, or the fact that you know it so well

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More