| Acronym | Meaning |
| AARC | Alliance For Acid Rain Control |
| DCA | Washington National Airport |
| FP | Plasma Frequency |
| MS | MASnet Code For The Mass Storage System |
| RTD | Regional Transportation Department |
| RDP | Research Data Program |
| FSTC | Foreign Science & Technology Center |
| FPI | Fabry-Perot Interferometer |
| NOSS | National Ocean Satellite System |
| NSN | NASA Science Network |