| Acronym | Meaning |
| MLWS | Mean Low Water Springs (nautical Charts) |
| UNAMSIL | United Nations Mission In Sierra Leone |
| UNMIK | United Nations Interim Administration Mission In Kosovo |
| Y | Yocto |
| EL | Exalitre |
| IU | Inuktitut Language (ISO 639-1 Code) |
| UNIS | University Of Surrey |
| SLE | Sierra Leone (ISO 3166 Trigram) |
| PBN | PolyButylene Naphthalate |
| YV | Yottavolt |