| Acronym | Meaning |
| MTBR | Mean Time Between Replacement |
| LPG | Last Page Generator (Distribution List Used In All OMT'S) |
| NDTL | Nondestructive Test Laboratory |
| SOT | Strap-on Tank |
| FDLN | Feedline |
| DOL | Discrete Output Low |
| ISI | Initial Systems Installation |
| MVAS | Multipurpose Ventricular Actuating System |
| WUSCI | Western Union Space Communications |
| DRF | Data RequestForm |