cobalamin

noun

co·​bal·​a·​min kō-ˈba-lə-mən How to pronounce cobalamin (audio)

Examples of cobalamin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Beef is an excellent source of vitamin B12 (cobalamin). Joy Emeh, Health, 2 June 2026 Milk Milk is an excellent source of riboflavin (B2) and cobalamin (B12). Colleen Doherty, Verywell Health, 14 Feb. 2026

Word History

Etymology

cobalt + vitamin

First Known Use

1956, in the meaning defined above

Time Traveler
The first known use of cobalamin was in 1956

Browse Nearby Words

Cite this Entry

“Cobalamin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cobalamin. Accessed 5 Jul. 2026.

Kids Definition

cobalamin

noun
co·​bal·​a·​min kō-ˈbal-ə-mən How to pronounce cobalamin (audio)

Medical Definition

cobalamin

noun
co·​bal·​a·​min kō-ˈbal-ə-mən How to pronounce cobalamin (audio)
variants also cobalamine

More from Merriam-Webster on cobalamin

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster