| Acronym | Meaning |
| IDR | Incremental Design Review |
| NAPAP | National Acid Precipitation Assessment Program |
| ISRIC | International Soil Reference And Information Centre |
| NOPS | Nimbus Observations Processing System |
| CAS | Cooperative Application Satellite |
| MIESR | Matrix Isolation/Electron Spin Resonance |
| ARCNET | Attached Resource Computer Network |
| SAS | Small Astronomy Satellite |
| SPC | Small Particle Count (or Counter) |
| SAR-X | SAR-X Band |