Definition of spiegeleisen in English:

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Pronunciation: /ˈspiːɡ(ə)lˌʌɪz(ə)n/


[mass noun]
An alloy of iron and manganese, used in steel-making.
Example sentences
  • Realising the enormous value of his discovery he continued with his experiments to master the facts concerning spiegeleisen when alloyed in various ways.
  • In 1904, Palmerton would begin producing spiegeleisen, taking advantage of the residuum from the zinc oxide furnaces.
  • The quality of the steel produced would be poor if it absorbed too much oxygen and too little carbon so spiegeleisen, a triple compound of iron, manganese and carbon was added (manganese combines readily with oxygen).


Mid 19th century: from German, from Spiegel 'mirror' + Eisen 'iron'.

For editors and proofreaders

Line breaks: spie¦gel|eisen

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