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 from the solution.
Origin of cyanide process
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a process for recovering gold and silver from ores by treatment with a weak solution of sodium cyanideAlso called: cyaniding
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