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Any of various alloys of iron and one or more other elements, such as manganese or silicon, used as a raw material in the production of steel.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
fer•ro•al•loy(ˌfɛr oʊˈæl ɔɪ, -əˈlɔɪ)
an alloy of iron with some element other than carbon.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.