| Acronym | Meaning |
| APD | Advanced Planning Division |
| SGS | Subgrid Scale |
| GRI | Gas Research Institute |
| ETFSP | Enhanced Technology Flight Segment Prototype |
| GAIM | Global Analysis |
| SPC | Small Particle Count (or Counter) |
| TGS | Text And Graphics System |
| ASASP | Advanced Solid-State Array Sensor |
| ERS | Element Requirements Specification |
| NESDD | NOAA Earth Science Data Directory |