| spillway | aliviadero |
| spin | girar |
| spin doctor | asesor de imagen |
| Spin glass | Vidrio de espín |
| spin out | alargar |
| Spin round | Abombarse |
| spin-drier | secador centrífugo |
| spin-dryer | secador centrífugo |
| spin-off | derivado |
| spina bifida | espina bífida |
| spinach | espinaca |
| Spinacia | Spinacia oleracea |
| spinal | espinal |
| spinal column | espina dorsal |
| spinal cord | médula espinal |
| Spinal cord injury | Lesión de la médula espinal |
| Spinal disc herniation | Hernia de disco |
| spindle | eje |
| Spindle apparatus | Huso mitótico |
| Spindle override | Interferencia |
| spindly | larguirucho |
| spindrift | rocío del mar |
| spine | espina |
| spine board | tablero |
| spine-chilling | atemorizante |
| Spined loach | Capra |
| spinel | espinela |
| spineless | invertebrado |
| spinet | espineta |
| Spinlock | Spinlock |
| spinnaker | spinnaker |
| spinner | cebo de cuchara |
| spinning | hilado |
| spinning jenny | hiladora |
| Spinning roller coaster | Montaña rusa giratoria |
| spinning top | trompo |
| spinning wheel | rueca |
| Spinone Italiano | Spinone |
| spinor | espinor |
| Spinosauridae | Spinosauridae |
| Spinosauroidea | Spinosauroidea |
| Spinosaurus | Spinosaurus |
| spinster | soltera |
| Spintronics | Espintrónica |
| Spinx | Esfinge |
| spiny | espinoso |
| spiny dogfish | mielga |
| spiny lobster | langosta |
| Spiny mouse | Acomys |
| Spiny rat | Echimyidae |
| SPIP | SPIP |
| Spiraeoideae | Spiraeoideae |
| spiral | dar vueltas |
| Spiral arm | Galaxia espiral |
| Spiral galaxy | Galaxia espiral |
| Spiral model | Espiral de Boehm |
| Spiral of silence | Espiral del silencio |
| spiral staircase | escalera de caracol |
| spiraled | enrollado |
| spiralled | enrollado |
