noun
a substance composed of a cyanogen group in combination with some element or radical; esp., potassium cyanide, KCN, or sodium cyanide, NaCN, extremely poisonous, white, crystalline compounds with an odor of bitter almonds: used in extracting gold from low-grade ores, electroplating, etc.
Origin:
cyan(o)- + -ide
transitive verb cyanided, cyaniding
to treat with cyanide