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[sahy-uh-noh-koh-bal-uh-min, sahy-an-oh-] /ˌsaɪ ə noʊ koʊˈbæl ə mɪn, saɪˌæn oʊ-/
noun, Biochemistry
1945-50; cyano-3 + cobal(t) + (vit)amin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for cyanocobalamin


a complex red crystalline compound, containing cyanide and cobalt and occurring in liver: lack of it in the tissues leads to pernicious anaemia. Formula: C63H88O14N14PCo Also vitamin B12
Word Origin
C20: from cyano- + cobal(t) + (vit)amin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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cyanocobalamin in Medicine

cyanocobalamin cy·a·no·co·bal·a·min (sī'ə-nō'kō-bāl'ə-mĭn, sī-ān'ō-)
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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cyanocobalamin in Science
  (sī'ə-nō'kō-bāl'ə-mĭn, sī-ān'ō-)   
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 Article for cyanocobalamin


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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