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
; see SPECULUM
) + Eisen
, iron (from
Middle High German īsen
Old High German īsan
; see eis- in the Appendix of Indo-European roots
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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