| Acronym | Meaning |
| SDH | Synchronous Digital Hierarchy |
| PMMA | PolyMethylMethAcrylate |
| JTLS | Joint Theater Level Simulation |
| XVIII | Eighteen (in Roman Numerals) |
| PSS | Personnel System Support |
| MIS | Management Information Systems - Museum Information System |
| JTC | Joint Training Confederation |
| KGZ | Kyrgyzstan (ISO 3166 Trigram) |
| IACREOT | International Association Of Clerks |
| F&SF | (The Magazine Of) Fantasy & Science Fiction |