| Acronym | Meaning |
| SPIDPO | Shuttle Payload Integration And Development Program Office |
| HAL | High Order Articulated Language |
| MTM | Methods Time Measurement |
| PSI | Pounds Per Square Inch (Static Pressure) |
| D | LSC Defense Logistics Service Center |
| IPS | IRIS Italian Research Interim Stage |
| RETRV | Retrieve |
| HCR | High Cross Range |
| EPDS | Electrical Power Distribution Subsystem |
| JPIC | Joint Program Integration Committee |