1. (n.)manganese a hard, brittle, grayish white, metallic element, an oxide of which, MnO
Etymology: (1670–80; < F manganèse < It manganese manganese dioxide, of obscure origin)
Definition of 'Manganese'
Princeton's WordNet
1. (noun)manganese, Mn, atomic number 25 a hard brittlegrey polyvalent metallicelement that resembles iron but is not magnetic; used in making steel; occurs in many minerals
Definition of 'Manganese'
Webster Dictionary
1. (noun)Manganese an element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty, but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8
Definition of 'Manganese'
U.S. National Library of Medicine
1. Manganese A traceelement with atomic symbol Mn, atomic number 25, and atomic weight 54.94. It is concentrated in cell mitochondria, mostly in the pituitary gland, liver, pancreas, kidney, and bone, influences the synthesis of mucopolysaccharides, stimulates hepatic synthesis of cholesterol and fatty acids, and is a cofactor in many enzymes, including arginase and alkaline phosphatase in the liver. (From AMA Drug Evaluations Annual 1992, p2035)
Definitions of Manganese 
