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speiss

American  
[spahys] / spaɪs /

noun

Metallurgy.
  1. a product obtained in smelting certain ores, consisting of one or more metallic arsenides, as of iron or nickel.


speiss British  
/ spaɪs /

noun

  1. the arsenides and antimonides that form when ores containing arsenic or antimony are smelted

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of speiss

First recorded in 1790–1800, speiss is from the German word Speise literally, food