Speiss

Speiss is a molten phase consisting primarily of iron arsenide that is commonly encountered in lead smelting operations.

n. a product obtained in smelting certain ores, consisting of metallic arsenides. [1790–1800; < German Speise literally, food] Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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