| Acronym | Meaning |
| USDI | United States Department Of Interior |
| ARF | Aviation Route Forecast |
| ADM | Administrative Services Section |
| EUMAC | Part Of EUROTRAC |
| BPS | Baud-per-second |
| HRIS | High-Resolution Infrared Radiation Sounder |
| UIPPA | See IUPAP |
| APT | Accelerator Production Of Tritium |
| ACV | At-completion Variance |
| AWQC | Ambient Water Quality Criteria |