Also, cobalamine [koh-bal-uh-meen] .

1945–50; cobal(t) + (vit)amin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

cobalamin co·bal·a·min (kō-bāl'ə-mĭn) or co·bal·a·mine (-mēn')
See vitamin B12.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cobalamin  [%PREMIUM_LINK%]     (kō-bāl'ə-mĭn)  Pronunciation Key 
See vitamin B<sub>12</sub>.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


a complex water-soluble organic compound that is essential to a number of microorganisms and animals, including humans. Vitamin B12 aids in the development of red blood cells in higher animals. The vitamin, which is unique in that it contains a metallic ion, cobalt, has a complex chemical structure as shown:

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Treatment consists of cobalamin and carnitine supplements and a low-protein diet.
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