vitamin B12
noun
1
: a complex cobalt-containing compound C63H88CoN14O14P that occurs especially in liver, is essential to normal blood formation, neural function, and growth, and is used especially in treating pernicious and related anemias and in animal feed as a growth factor
called also cyanocobalamin
2
: any of several compounds similar to vitamin B12 in action but having different chemistry
Examples of vitamin B12 in a Sentence
Recent Examples on the Web
Packed with vitamin B12 and hyaluronic acid, the serum gives you brighter, more even skin with every use.
—
Savannah Smith, Rolling Stone, 2 Oct. 2024
Ritual Multivitamin Women 50+ $43 $30 AMAZON Just two capsules a day provide the benefits of vitamin D3 to support the immune system, calcium to maintain bone health, magnesium and D3 to aid muscle function, and omega-3 DHA and vitamin B12 to support brain health.
—Iman Balagam, Vogue, 9 Oct. 2024
Three ounces of skipjack tuna, for example, contain iron, calcium, magnesium, phosphorus, zinc, thiamin, folate, vitamin B12, vitamin A, and a whopping 18 grams of protein, per the U.S. Department of Agriculture.
—Daryl Austin, USA TODAY, 8 Oct. 2024
While plants do not contain vitamin B12 naturally, many breakfast cereals and nutritional yeasts are fortified with vitamin B12.9
Research indicates that a vitamin B12 deficiency can occur with a heterogeneous list of symptoms.
—Anna Giorgi, Verywell Health, 1 Oct. 2024
Older adults tend to be at a higher risk for vitamin B12 deficiency.15
4.
—Lauren O'Connor, Ms, Health, 29 Sep. 2024
Other risks include brain damage, anemia, nerve damage, paralysis, vitamin B12 deficiency and nitrous oxide dependency.
—Kristen Rogers, CNN, 20 Sep. 2024
Bacopa extract, blueberry extract, omega-3 fatty acids, vitamin B6, vitamin B12 | Dietary considerations: gluten-free | Third-Party Tested: Yes.
—Kelsey Kunik, Rd, Verywell Health, 25 Sep. 2024
Fortifying bouillon cubes with iron, folic acid, zinc, and vitamin B12, for example, could prevent 16.6 million cases of anemia each year in Nigeria.
—Alice Park, TIME, 17 Sep. 2024
Savannah Smith, Rolling Stone, 2 Oct. 2024
Ritual Multivitamin Women 50+ $43 $30 AMAZON Just two capsules a day provide the benefits of vitamin D3 to support the immune system, calcium to maintain bone health, magnesium and D3 to aid muscle function, and omega-3 DHA and vitamin B12 to support brain health.
—Iman Balagam, Vogue, 9 Oct. 2024
Three ounces of skipjack tuna, for example, contain iron, calcium, magnesium, phosphorus, zinc, thiamin, folate, vitamin B12, vitamin A, and a whopping 18 grams of protein, per the U.S. Department of Agriculture.
—Daryl Austin, USA TODAY, 8 Oct. 2024
While plants do not contain vitamin B12 naturally, many breakfast cereals and nutritional yeasts are fortified with vitamin B12.9
Research indicates that a vitamin B12 deficiency can occur with a heterogeneous list of symptoms.
—Anna Giorgi, Verywell Health, 1 Oct. 2024
Older adults tend to be at a higher risk for vitamin B12 deficiency.15
4.
—Lauren O'Connor, Ms, Health, 29 Sep. 2024
Other risks include brain damage, anemia, nerve damage, paralysis, vitamin B12 deficiency and nitrous oxide dependency.
—Kristen Rogers, CNN, 20 Sep. 2024
Bacopa extract, blueberry extract, omega-3 fatty acids, vitamin B6, vitamin B12 | Dietary considerations: gluten-free | Third-Party Tested: Yes.
—Kelsey Kunik, Rd, Verywell Health, 25 Sep. 2024
Fortifying bouillon cubes with iron, folic acid, zinc, and vitamin B12, for example, could prevent 16.6 million cases of anemia each year in Nigeria.
—Alice Park, TIME, 17 Sep. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'vitamin B12.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Vitamin B12.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vitamin%20B12. Accessed 5 Nov. 2024.
Copy CitationMedical Definition
vitamin B12
noun1
: a complex cobalt-containing compound C63H88CoN14O14P found in animal products (as meat and eggs) that is essential to normal blood formation, neural function, and growth and is used especially in treating pernicious and related anemias and in animal feed as a growth factor
called also cyanocobalamin
2
: any of several compounds similar to vitamin B12 in action but having different chemistry
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