Treated with or containing cyanide; subjected to the cyanidation process.
From cyanide + -ed (past participle/adjective suffix). This is the past tense or adjectival form describing something that has undergone cyanide treatment.
When miners talk about 'cyanided ore,' they mean the rock has been soaked in cyanide solution to dissolve precious metals—it's a shorthand that shows how technical jargon makes complex industrial processes easy to discuss.
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