| Acronym | Meaning |
| AMF | Astronaut Memorial Foundation |
| EHC | Electrical Heating Control |
| E&D | Engineering And DeveloPment Directorate (JSC) |
| PH | Hydrogen-Ion Concentration (Alkalinity) |
| ES | Experiment Segment |
| DHS | Discrete Horizon Sensor |
| PCR | Program Change Request |
| ISTA | Intertank Structural Test Assembly |
| TRRB | Test Readiness Review Board |
| EB | Electronic Beam |