| Subject | English | Spanish |
| chem. | allyl cyanide | cianuro de alilo |
| met. | bath cyaniding | temple por cianuración |
| chem. | benzyl cyanide | cianuro de bencilo |
| chem. | black cyanide | cianuro negro |
| chem. | bromine cyanide | bromocianógeno |
| chem. | bromobenzyl cyanide | cianuro de bromobencilo |
| chem. | bromobenzyl cyanide | cianuro de bromo-bencilo |
| chem. | calcium cyanide | cianuro calcico |
| chem. | calcium cyanide | cianuro cálcico |
| chem. | calcium cyanide | cianuro de calcio |
| chem. | calcium cyanide | CaCN2 |
| chem. | carbonyl cyanide | cianuro de carbonilo |
| chem. | complex cyanide | cianuro complejo |
| chem. | copper cyanide | cianuro de cobre |
| chem. | cuprous cyanide | cianuro cuproso |
| chem. | cuprous cyanide | CuCN |
| UN | cyanide-containing waste substances | desechos cianurados |
| environ. | cyanide-free wastes containing chromium | Residuos sin cianuro que contienen cromo |
| environ. | cyanide-free wastes not containing chromium | residuos sin cianuro que no contienen cromo |
| met. | cyanide hardening | cianuración |
| met. | cyanide hardening | cementación en baño de cianuro |
| met. | cyanide process | método del cianuro |
| environ., chem. | dissolving with a solution of acetate and sulphited ammonium cyanide | disolución con una solución de acetato y cianuro de amonio sulfitada |
| chem. | ethyl cyanide | cianuro de etilo |
| chem. | ethylene cyanide | cianuro de etileno |
| chem. | free cyanide | cianuro libre |
| met. | gas cyaniding | carbonitrurar |
| chem. | gold cyanide | cianuro de oro |
| chem. | hydrogen cyanide | ácido cianhídrico |
| chem. | Hydrogen cyanide | cianuro de hidrógeno |
| chem. | hydrogen cyanide | cianuro de hidrógeno |
| chem. | iodine cyanide | cianuro de yodo |
| chem. | mercuric cyanide | HgCN2 |
| chem. | mercuric cyanide | cianuro mercúrico |
| chem. | mercury cyanide | cianuro de mercurio |
| chem. | methyl cyanide | acetonitrilo |
| chem. | methyl cyanide | cianuro de metilo |
| gen. | nickle cyanide | cianuro de níquel |
| gen. | nickle cyanide | NiCN2 |
| chem. | nitrobenzoyl cyanide | cianuro de nitrobenzoilo |
| chem. | platinum barium cyanide | cianuro platinoso-bárico |
| environ., chem. | potassium cyanide | KCN |
| environ., chem. | potassium cyanide | cianuro de potasio |
| chem. | potassium cyanide | cianuro potásico |
| environ. | salts and solutions containing cyanides | Sales y soluciones que contienen cianuros |
| chem. | silver cyanide | cianuro de plata |
| chem. | silver cyanide | CNAg |
| chem. | silver potassium cyanide | cianuro de plata y potasio |
| health., food.ind. | smoke contains benzene, nitrosamines, formaldehyde and hydrogen cyanide | el humo contiene benceno, nitrosaminas, formaldehído y cianuro de hidrógeno |
| chem. | sodium cyanide | cianuro de sodio |
| chem. | sodium cyanide | cianuro sódico |
| chem. | total cyanide | cianuro total |
| energ.ind., chem. | vinyl cyanide | nitrilo acrílico |
| energ.ind., chem. | vinyl cyanide | acrilonitrilo |
| environ. | waste substance with a cyanide content | desechos con contenido cianúrico |
| environ. | wastes containing cyanide | Residuos que contienen cianuro |
| chem. | weak acid dissociable cyanide | cianuro disociable en ácido débil |
| chem. | zinc cyanide | cianuro de zinc |
| chem. | zinc cyanide | cianuro de cinc |
| chem. | zinc cyanide | ZnCN2 |