| Acronym | Meaning |
| NNT | Nearest Neighbor Tool |
| AIDS | Activity Information Data Systems |
| ENS | European Nuclear Society |
| ALT/RA | Altimeter/Radar Altimeter |
| DCAA | Defense Contract Audit Agency |
| DCAR | Data Collection Analysis Request |
| LRC | Langley Research Center |
| HMMR | High Resolution Multifrequency Microwave Radiometer |
| MIPS | Millions Of Instructions Per Second |
| VAS | VISSR Atmospheric Sounder |