Submitted by György Chityil ... on Fri, 01/19/2018 - 21:46 Hierarchy: NounDescription: {{metallurgy}} The extraction of gold or silver from their ores using the cyanide processNgram: cyanidationNgram Text: cyanidationSource: WiktionaryIssue: 0Wiktionary tag: metallurgyNgram Count: 1