| Acronym | Meaning |
 | OMS | Orbital Maneuvering System |
| DCX | Delta Clipper EXperimental |
| PASS | Primary Avionics Software System |
| CNES | Centre National D'Etude Spatiales |
| GC | Globular Cluster |
| PLBD | Payload Bay Doors |
| BH | Black Hole |
| TIG | Time Of (until) Ignition |
| BMDO | Ballistic Missile Defense Office |
| MMT | Multiple Mirror Telescope |
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