| Acronym | Meaning |
| GI | Galvanised Iron - Gastro-Intestinal - General Issue -Gibraltar (ISO 3166 Digram; FIPS 10-4 Territory Code) -Government Issue |
| MSL | Mars Science Laboratory - Mean Sea Level -Missile |
| WRBWWRM | We Read Best What We Read Most |
| DSPL | Design Specialists And Plans Language |
| SP | Special - Spring Tide (nautical Charts) |
| QWG | Quadripartite Working Group (qwig) |
| TK | Terakelvin - Tokelau (ISO 3166 Digram) |
| LGM | Little Green Men |
| NUTS | Nuclear Utilization Target Selection |
| AIRS | Aerometric Information Retrieval System (obsolete; Replaced With AFS) |