cyanocobalamin

 
Pronunciation: /ˌsʌɪənə(ʊ)kəˈbaləmɪn/

noun

[mass noun]
  • a vitamin derived from foods of animal origin such as liver, fish, and eggs, a deficiency of which can cause pernicious anaemia. It contains a cyanide group bonded to the central cobalt atom of a cobalamin molecule. Also called vitamin B12.

Origin:

1950s: from cyanogen and cobalamin (blend of cobalt and vitamin)