| Acronym | Meaning |
 | AA | Adverse Action |
| AECA | Arms Export Control Act |
| TBO | Tropospheric Biennial Oscillation |
| BGS | Biogeosciences Initiative |
| ASNT | American Society For Nondestructive Testing |
| MIESR | Matrix Isolation/Electron Spin Resonance |
| QNH | Quasi-nonhydrostatic Model |
| MIMD | Multiple Instruction Multiple Data |
| NASAO | National Association Of State Aeronautics And Organizations |
| TLS | Tunable Laser Spectroscopy |
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