Definition

1. Noun:
   • A B vitamin that is used to treat pernicious anemia: Vitamin B12 is a specific, water-soluble nutrient essential for nerve function, red blood cell formation, and DNA synthesis. Its deficiency is directly linked to pernicious anemia.

Usage Examples

• Noun:
  • A deficiency in vitamin B12 can cause fatigue and neurological issues.
  • The doctor prescribed an injection of vitamin B12 to correct the anemia.
  • Foods like liver and shellfish are rich sources of vitamin B12.

Advanced Usage

• "Vitamin B12 deficiency": A medical condition resulting from inadequate levels of the vitamin.

  • Elderly individuals are often screened for vitamin B12 deficiency.

• "Vitamin B12 supplement": A product taken to increase intake of the vitamin.

  • Many vegetarians take a daily vitamin B12 supplement.

Variants and Related Words

• Cobalamin (n): The scientific name for vitamin B12, referring to its chemical structure.

  • Cobalamin is the coenzyme form of vitamin B12.

• Cyanocobalamin (n): A common synthetic form of vitamin B12 used in supplements and fortified foods.

  • This multivitamin contains cyanocobalamin as its source of B12.

Synonyms

• Cobalamin: The biochemical term.
• Anti-pernicious anemia factor: A historical term highlighting its therapeutic use.

Related Phrases

• B12 shot/injection: A method of administering the vitamin directly into muscle tissue.

  • She gets a B12 shot every month for her deficiency.

• B12 levels: A reference to the amount of the vitamin present in the blood, often measured in a test.

  • The blood test will check your B12 levels.

Noun

1. a B vitamin that is used to treat pernicious anemia