spiegeleisen

English

Etymology

From German Spiegeleisen (literally “mirror iron”).

Pronunciation

• IPA^(key): /ˈʃpiːɡəlˌaɪzən/

Noun

spiegeleisen (countable and uncountable, plural spiegeleisens)

1. A ferromanganese alloy containing approximately 15% manganese and small quantities of carbon and silicon.

   Historically, spiegeleisen was the standard form in which manganese was traded and used in steelmaking.