| Acronym | Meaning |
 | HPO | High Performance Option |
| NAS | National Airspace System |
| DHR | Director Of Human Resources |
| ACME | Airborne Carbone In The Mountains Experiment |
| DSDP | Deep Sea Drilling Project |
| AVHRR | Advanced Very High Resolution Radiometer |
| KP | Low Magnetic Activity |
| ISU | Intermediate Storage Unit |
| RUCS | Rapid Update Cycle Surface |
| QSO | Quasi-stellar Object |
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