Cyaniding is a process used in metallurgy to harden the surface of metals by treating them with a cyanide salt. Synonyms for cyaniding include cyanidation, cyanate treatment, and cyanide bath. Other similar terms include cyanation, cyanurization, and cyano treatment. These terms all refer to the use of cyanide salts to modify the surface properties of metals and enhance their properties. Although the use of cyanide in industrial processes can be controversial due to its toxicity, it remains an important technique in the production of certain metal products. Therefore, understanding the various synonyms for cyaniding can be helpful in technical and professional settings.