1. a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition; [syn: cobalt, Co, atomic number 27]
WordNet (r) 3.0 (2006):
atomic number 27
n 1: a hard ferromagnetic silver-white bivalent or trivalent
metallic element; a trace element in plant and animal
nutrition [syn: cobalt, Co, atomic number 27]