1. a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals; [syn: manganese, Mn, atomic number 25]
WordNet (r) 3.0 (2006):
atomic number 25
n 1: a hard brittle grey polyvalent metallic element that
resembles iron but is not magnetic; used in making steel;
occurs in many minerals [syn: manganese, Mn, atomic
number 25]