Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “vitamin B12”

vitamin B12

noun [U] uk   /ˌvɪt.ə.mɪnˌbiːˈtwelv/ us    /ˌvaɪ.t̬ə-/
a vitamin found in foods such as liver, kidney, eggs, fish, and milk. It is important for a healthy nervous system, normal growth, and the production of red blood cells.Vitamins and minerals
(Definition of vitamin B12 from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of vitamin B12?
Add Cambridge dictionaries to your browser to your website

More meanings of “vitamin B1”

Translations of “vitamin B12”

Word of the Day

throw

to send something through the air with force, especially by a sudden movement of the arm

Word of the Day

Blog

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