from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See vitamin B12.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several substances depending on the upper axial ligand of the cobalt ion.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a B vitamin that is used to treat pernicious anemia
cobal(t) + (vit)amin.(American Heritage® Dictionary of the English Language, Fourth Edition)