spiegeleisen

== English == === Etymology === From German Spiegeleisen (literally “mirror iron”). === Pronunciation === IPA(key): /ˈʃpiːɡəlˌaɪzən/ === Noun === spiegeleisen (countable and uncountable, plural spiegeleisens) A ferromanganese alloy containing approximately 15% manganese and small quantities of carbon and silicon. ==== Related terms ==== manganeisen