| Acronym | Meaning |
| H-CITE | Horizontal-Cargo Integration Test Equipment |
| DIMEN | Dimension |
| LHE | Liquid Helium |
| CSI | Coelliptic Sequence Initiation |
| RCAG | Remote Control Air-Ground |
| FCIT | First Computer Interface Tester |
| FT | Functional Test |
| OIB | Orbiter Interface Box |
| L | Level |
| GC | Gigacycles (1000 Megacycles) |