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An alloy of iron containing approximately 15 percent manganese and small quantities of carbon and silicon, used in the Bessemer process.
[German : Spiegel, mirror (from Middle High German, from Old High German spiagal, from Latin speculum; see speculum) + Eisen, iron (from Middle High German īsen, from Old High German īsan; see eis- in Indo-European roots).]
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.
(Metallurgy) a type of pig iron that is rich in manganese and carbon
[C19: German, from Spiegel mirror + Eisen iron]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||spiegeleisen - pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel|
pig iron - crude iron tapped from a blast furnace
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