| Acronym | Meaning |
 | OEX | Orbiter Experiments |
| HQ | Headquarters (HDQ Preferred) |
| SRU | Space Replaceable Units |
| TV | Transport Vehicle |
| DDR | Data Discrepancy Report |
| TMP | Time Management Processor |
| GCC | Ground Control Center |
| ODP | Operational Display Procedure |
| VCO | Voltage Controlled Oscillator (Oscillation) |
| EHX | Experiment Dedicated Heat Exchanger |
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