ferromanganese[-maŋ′gə nēs′, -nēz′]
ferromanganese definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
an alloy of iron and manganese, used for making hard steel
ferromanganese definition by American Heritage Dictionary
An alloy of iron and manganese used in the production of steel.