| Acronym | Meaning |
 | HTHL | Horizontal Takeoff Horizontal Landing |
| SDI | Strategic Defense Initiative |
| TAL | Transatlantic Abort Landing |
| UBM | Unpressurized Berthing Mechanism |
| VHF | Very High Frequency |
| NS | Neutron Star |
| ASRM | Advanced Solid Rocket Motor |
| VRM | Venus Radar Mapper |
| LLNL | Lawrence-Livermore National Laboratory |
| CPCG | Commercial Protein Crystal Growth |
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