| Acronym | Meaning |
| HIPO | Hierarchical Input/Process Output |
| SRPA | Spherical Retarding Potential Analyzer |
| TRKR | Tracker |
| RNG | RT Range Rate |
| K | Kelvin |
| SPC | Shuttle Processing Contractor |
| TO | Operations Management (TS) |
| SOP | Spacelab OPportunity Payload |
| HAL/S | High Order Programming Language For Spacelab Usage |
| DELTA-T | Difference In Temperature |