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vitamin B12
noun
- a deep-red crystalline, water-soluble solid, C 63 H 88 N 14 O 14 PCo, obtained from liver, milk, eggs, fish, oysters, and clams: a deficiency causes pernicious anemia and disorders of the nervous system.
vitamin B12
vitamin B12
- A water-soluble, complex organic compound containing cobalt, found especially in meat, liver, eggs, milk, and milk products. Vitamin B 12 is necessary for the synthesis of DNA by the body, for the production of blood cells, and for maintaining the health of nerves. A deficiency of vitamin B 12 in the diet results in pernicious anemia .
- Also called cobalamin cyanocobalamin
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Word History and Origins
Origin of vitamin B121
First recorded in 1945–50
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Compare Meanings
How does vitamin B12 compare to similar and commonly confused words? Explore the most common comparisons:
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Example Sentences
Clemens insists that the only shots McNamee gave him were Vitamin B12.
From The Daily Beast
Iron deficiency can cause anemia, as can vitamin B12 or folic acid deficiency.
From Project Gutenberg
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