vitamin B12
Americannoun
noun
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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.
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Also called cobalamin cyanocobalamin
Etymology
Origin of vitamin B12
First recorded in 1945–50
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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.
These foods provide nutrients that are essential for maintaining muscle and bone health, including high-quality protein, vitamin B12, calcium and vitamin D.
From Science Daily
Full-fat cheese contains several nutrients relevant to brain health, including fat-soluble vitamins A, D and K2, as well as vitamin B12, folate, iodine, zinc and selenium.
From Science Daily
However, they also had lower intakes of energy, protein, fat, vitamin B12, and zinc.
From Science Daily
In particular, not getting enough of three essential nutrients — vitamin D, vitamin B12 and omega-3 fatty acids — is linked to low energy levels.
From Salon
Famine and food shortages in Gaza mean pregnant women are not getting enough folate, iron, vitamin B12 and iodine.
From Salon
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
