| Acronym | Meaning |
| BTR | Bronetransporter (??? = ???????????????? (Heavy) Armoured (Personnel) Transporter) ? |
| DJI | Djibouti (ISO 3166 Trigram) |
| GZK | Greisen-Zatsepin-Kuzmin Cut-off (cosmic Ray Energies) |
| MOTO | Mail Order / Telephone Order - Master Of The Obvious |
| DTSA | (U.S.) Defense Technology Security Administration |
| R&S | Reconnaissance & Surveillance |
| WSUS | Windows Server Update Services |
| NFER | National Foundation For Educational Research |
| ZG | Zettagram |
| SSRI | Selective Serotonin Reuptake Inhibitor - Social Systems Research Institute |