| Acronym | Meaning |
| GRB | Gamma-Ray Burst |
| THEL | Tactical High Energy Laser ACTD |
| RX | Medical Prescription (possibly From Latin Recipere |
| RGB | Red Green Blue (colour Model) |
| M&S | Modelling & Simulation - Marks & Spencer |
| PN | Petanewton - Pitcairn Islands (ISO 3166 Digram) |
| CXR | Christmas Island (ISO 3166 Trigram) |
| PLF | Parachute Landing Fall |
| JDAM | Joint Direct Attack Munition (djay-dam) |
| BRS | Battlefield Reasoning System |