| Acronym | Meaning |
 | ACF | Automated Control Function |
| DOR | Differenced One-way Range |
| PPF | Columbus Polar Platform |
| CV | Cataclysmic Variable |
| IR | InfraRed |
| VPF | Vertical Processing Facility |
| GMC | Giant Molecular Cloud |
| ISO | Imaging Spectrometic Observatory |
| PLSS | Portable Life Support System |
| TIROS | Television InfraRed Observation Satellite |
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