| Acronym | Meaning |
| CISB | Complete In Sealed Box (Internet Auction/trading Listings) |
| FME | Formal Methods Europe |
| SSS | Siding Spring Survey - Side Side Side (an Acronym For Remembering Congruent Triangles) |
| AFJ | April Fool's Joke |
| SHAPE | Supreme Headquarters Allied Powers Europe |
| ORSA | Oxacillin-resistant Staphylococcus Aureus - Operations Research Society Of America |
| MW | Maintenance Of Way (also MOW) -Malawi (ISO 3166 Digram) -Medium Wave (radio) -Megawatt |
| RN | Royal Navy |
| TRAIN | Tourist Railway Association |
| SNM | Special Nuclear Material |