| Acronym | Meaning |
| YF | Yottafarad |
| AET. | Aetatis (Latin |
| IEC | International Electrotechnical Commission |
| IOT&E | Integrated Operational Test And Evaluation |
| EMD | Electro-Motive Diesel - Engineering And Manufacturing Development - European Missile Defence |
| FSB | Federal'naya Sluzhba Bezopasnosti Rossiyskoi Federatsii (???????????? ??????? ????????????? ??????????? ?????????? |
| DBDO | Desert BDO |
| RERC | Rehabilitation Engineering Research Center |
| GD | Scottish Gaelic Language (ISO 639-1 Code) |
| IAUC | International Astronomical Union Circular |