| Subject | English | Spanish |
| mater.sc. | alloy of polystyrene and polyphenylene oxide PPO | aleación de poliestireno y polióxido de fenileno PPO |
| chem. | atactic polystyrene | poliestireno atactico |
| industr., chem., polit. | European Extruded Polystyrene Insulation Board Associations | Asociaciones europeas del sector de los tableros de poliestireno extruido para aislamiento |
| fin., industr., polit. | European Quality Assurance Association of Expanded Polystyrene Foam Manufacturers | Asociación de los fabricantes de espuma de poliestireno expandido, para el control de calidad |
| industr., chem., engl. | expanded polystyrene | Styropor |
| mater.sc., chem. | expanded polystyrene | espuma de poliestireno |
| mater.sc., industr., construct. | expanded polystyrene | espuma de poliestireno expandido |
| mater.sc., chem. | expanded polystyrene | poliestireno expandido |
| pack. | expanded polystyrene | poliestireno expandido (espumado) |
| pack. | expanded polystyrene foam | espuma de poliestireno expandido |
| health. | expanded polystyrene projection | protuberancia de goma espuma |
| industr., chem. | expansive polystyrene | poliestireno expandido |
| industr., chem., engl. | expansive polystyrene | Styropor |
| industr., chem. | extruded polystyrene | poliestireno extruido |
| mater.sc., chem. | foam polystyrene | poliestireno expandido |
| mater.sc., industr., construct. | foam polystyrene | espuma de poliestireno expandido |
| mater.sc., chem. | foam polystyrene | espuma de poliestireno |
| pack. | foamed polystyrene | espuma de poliestireno expandido |
| mater.sc., chem. | foamed polystyrene | poliestireno expandido |
| mater.sc., chem. | foamed polystyrene | espuma de poliestireno |
| pack. | foamed polystyrene | poliestireno expandido (espumado) |
| industr., construct., chem. | polystyrene-butadiene | poliestireno-butadieno |
| industr., construct. | polystyrene fibre | fibra de poliestireno |
| biotechn. | polystyrene immunoplates | inmunoplacas de poliestireno |
| tech. | polystyrene insulating snow | nieve aislante de poliestireno |
| tech., mater.sc. | sulphonated polystyrene | poliestireno sulfonado |