| Acronym | Meaning |
| YL | Yottalitre |
| PBX | Private Branch EXchange (company Phone System) |
| TSEC | Transmission Security Encryption Code |
| DSR | Deformed Special Relativity |
| COS | Corsican Language (ISO 639-2 Code) - Cosine |
| PASGT | Personnel Armor System |
| DSO | Distinguished Service Order (British Military Decoration) |
| CMHC | Canada Mortgage And Housing Corporation |
| DNM | Defence Nuclear Material |
| IVO | In Vicinity Of |