| Acronym | Meaning |
| ETE | End-to-End |
| NFW | NNFW Nonfuel Wasting |
| HISAM | Hardware Initiated Standalone Memory |
| MDDS | Material Directory Data Sheet |
| LDR | LowData Rate |
| OPIS | Orbiter Prime Item Specification |
| DAC | Data Acquisition And Control |
| SRR | Shuttle Requirements Review |
| VEI | Vehicle End Item |
| SPIDPO | Shuttle Payload Integration And Development Program Office |