cyanide process

noun

1. 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.

cyanide process

noun

1. a process for recovering gold and silver from ores by treatment with a weak solution of sodium cyanide Also calledcyaniding

Word History and Origins

Origin of cyanide process¹

First recorded in 1885–90

Example Sentences

Including the most recent Improvements in the Cyanide Process.

From Project Gutenberg

The dirt is now treated by what is termed the cyanide process.

From Project Gutenberg

Jack was no longer Jack, but a mixture of Alington, deep levels, and cyanide process.

From Project Gutenberg

Again the milling results were not good, and what it demanded was the cyanide process.

From Project Gutenberg

The improved dioxide cyanide process was adopted about 1895.

From Project Gutenberg