| Acronym | Meaning |
| PLBD | Payload Bay Doors |
| ISO | Imaging Spectrometic Observatory |
| LOX | Liquid OXygen |
| NIMS | Near Infrared Mapping Spectrometer |
| LARC | Langley Research Center |
| STS | Shuttle Transport System / Space Transportation System |
| LN2 | Liquid Nitrogen |
| MCCC | Maragone Convection On Closed Containers |
| SAA | South Atlantic Anomaly / Single Access Antenna |
| PCT | Photometric Calibration Test |