| Acronym | Meaning |
 | PCO | Polar Cap Observatory |
| OSDPD | Office Of Space Data Processing And Distribution |
| AIRS | Advanced Inertial Reference Sphere |
| DDHS | Digital Data Handling System |
| CDR | Circular Depolarization Ratio |
| ARMAR | Airborne Rain Mapping Radar |
| ODP | Ocean Drilling Program |
| DRTS | Data Relay And Tracking Satellite |
| CAPPPI | Citizen Ambassador Program Of People To People International |
| AFV | Alternative Fuel Vehicle |
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