cyanide (n.)youdaoicibaDictYouDict[cyanide 词源字典]
a salt of hydrocyanic acid, 1826, coined from cyan-, comb. form for carbon and nitrogen compounds, from Greek kyanos "dark blue" (see cyan) + chemical ending -ide, on analogy of chloride. So called because it first had been obtained by heating the dye pigment powder known as Prussian blue (see Prussian).[cyanide etymology, cyanide origin, 英语词源]