| Acronym | Meaning |
 | MEZ | Missile Engagement Zone |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |
| DEFRA | (UK) Department For Environment |
| IADS | Integrated Air Defence System |
| SARA | Southeastern Association For Research In Astronomy - Scientific Atlanta Resident Application - Scottish Amateur Rowing Association - Southern African Railway Association - State Administration For Religious Affairs |
| B10 | Ben 10 |
| GW | Games Workshop - Germ Warfare -Gigawatt -Guided Weapon -Guinea-Bissau (ISO 3166 Digram) |
| TARDIS | Time And Relative Dimensions In Space (from Doctor Who) |
| ACLU | American Civil Liberties Union |
| BBS | Breeding Bird Survey (North America) - Brigade/Battalion Battle Simulation - Bulletin Board System |
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