| Acronym | Meaning |
| BR | Bit Rate |
| OL | Open Loop |
| BP | C/0Changeout |
| EVM | Earth Viewing Module |
| CSD | Control System DeveloPment |
| WSB | Water Spray Boiler |
| CDNR | CDR Discrepancy Notice Record |
| TLL | Tooling Inspection Instrumentation |
| PAE | Preventive Action Engineer |
| FRCI | Fibrous Refractory Composite Insulation |