speissPronunciation: /spʌɪs/Definition of speiss noun [mass noun] a mixture of impure compounds of arsenic and antimonium with nickel, cobalt, iron, and other metals, produced in the smelting of cobalt and other ores. Origin: late 18th century: from German Speise 'food, amalgam'speiss in other Oxford dictionaries Definition of speiss in the US English dictionary
