| self-service | cafeteria |
| Selfoss | Selfoss |
| Selgovi | Selgovae |
| Seligenstadt | Seligenstadt |
| Selim I | Selim I |
| Selim II | Selim II |
| Selim III | Selim III |
| Selinunte | Selinunte |
| Selje | Selje |
| Selkie | Selkie |
| sella | saddle |
| Sella curule | Curule chair |
| sella da amazzone | side saddle |
| sella da donna | side saddle |
| Sella Nevea | Sella Nevea |
| Sellaband | Sellaband |
| sellaia | saddler |
| sellaio | saddler |
| Sellaite | Magnesium fluoride |
| Sellapan Rama Nathan | Sellapan Ramanathan |
| Selle Français | Selle Français |
| selleria | saddlery |
| sellino posteriore | pillion |
| sellone | shaft bow |
| Selma Lagerlöf | Selma Lagerlöf |
| Selman Abraham Waksman | Selman Waksman |
| Selnica ob Dravi | Selnica ob Dravi |
| Selonia | Selonia |
| Selonici | Selonians |
| Selous Scout | Selous Scouts |
| Selters | Selters |
| Seltisberg | Seltisberg |
| Seltjarnarnes | Seltjarnarnes |
| seltz | soda |
| selva | wood |
| Selva dei Molini | Mühlwald |
| Selva di Turingia | Thuringian Forest |
| Selva di Val Gardena | Sëlva |
| Selva Nera | Black Forest |
| selvaggia | rambunctiousness |
| selvaggiamente | savagely |
| selvaggina | game |
| selvaggina grossa | big game |
| selvaggio | haggard |
| selvatico | wild |
| selve | woods |
| Selzach | Selzach |
| Selûne | Selûne |
| SEM | scanning electron microscope |
| Semaeostomeae | Semaeostomeae |
| semafori | traffic lights |
| semaforo | signal |
| semaforo rosso | stoplight |
| semaforo verde | green light |
| semantica | semantics |
| semanticamente | semantically |
