Meaning of manganese


Pronunciation: (mang'gu-nēs", -nēz"), [key]
— n. Chem.
  1. a hard, brittle, grayish-white, metallic element, an oxide of which, MnOis a valuable oxidizing agent: used chiefly as an alloying agent in steel to give it toughness. Symbol: Mn; at. wt.: 54.938; at. no.: 25; sp. gr.: 7.2 at 20°C.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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