| Acronym | Meaning |
| P/L | Parts List |
| TIROS | ToPographical Infrared Operations Satellite |
| SKD | Singer |
| SOP | Spacelab OPportunity Payload |
| IUS | Interim/intermediate UPper State |
| PMS | Performance Measurement System |
| SRCB | Software Requirements Control Board |
| CSIU | Core Segment Interface Unit |
| SILTS | Shuttle Infrared Leeside Temperature Sensing |
| CFD | Converter |