| Subject | English | Spanish |
| transp., mech.eng. | composite rocket engine | motor mixto de cohete |
| transp., avia., mech.eng. | liquid propellant rocket engine | motor para cohete de propulsante líquido |
| transp., avia., mech.eng. | liquid-propellant rocket engine | cohete de propulsante líquido |
| tech. | rocket engine | motor de reacción directa |
| mech.eng., el. | rocket engine | cohete |
| transp., avia., mech.eng. | rocket engine | motor cohete |
| tech. | rocket engine | motor cohético |
| chem., mech.eng. | solid fuelled rocket engine | motor de propelente sólido |
| transp., avia., mech.eng. | solid propellant rocket engine | motor cohete de propulsante sólido |
| chem., mech.eng. | solid rocket engine | motor de propelente sólido |