n. 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 the Appendix of Indo-European roots).] |
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