| Acronym | Meaning |
 | UGGI | See IUGG |
| PSPT | Precision Solar Photometric Telescope |
| OTS | Office Of Technical Services |
| EM-SCATTERING | Electromagnetic Scattering |
| DUOF | Depleted Uranium Oxide Facility |
| NAVSTAR | NAVigation Signal Timing And Ranging System |
| DDB | Delayed Direct Broadcast |
| NATCA | National Air Traffic Control Administration |
| ATAMC | Air Transport Association Meteorological Committee |
| MILOX | Mid-Latitutde Ecosystem And Photochemical Oxidants |
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