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A process of extracting gold or silver from ores by treating them with a solution of sodium cyanide or calcium cyanide.
(Metallurgy) a process for recovering gold and silver from ores by treatment with a weak solution of sodium cyanide. Also called: cyaniding
a process for extracting gold or silver from ore by dissolving the ore in an alkaline solution of sodium cyanide or potassium cyanide and precipitating the gold or silver.