| Acronym | Meaning |
| SI | International System Of Units (ISU Preferred) |
| CRC | Cost Reduction Curve |
| PACE | Prelaunch Automatic Checkout Equipment |
| M | ITTSE Mobile Lgor Tracking Telescope System |
| PSA | Pre/Post Sleep Activity |
| MIB | Master Interconnect Board |
| TBI | Through-Bulkhead Initiator |
| MPESS | Mission Peculiar Experiment Support Structure |
| U | Uranium |
| SCHED | Scheduled |