| Acronym | Meaning |
| NEJAC | National Environmental Justice Advisory Council |
| HEDS | Human Exploration And Development Of Space |
| SEELFS | Surface Extended-energy-loss Fine-structure |
| PCFA | Principal Component Factor Analysis |
| RHO | Reduced Hamiltonian Orbital Method |
| NFE-TB | Nearly-free-electron Tight-bonding (for Electronic Structure) |
| LED | Light-emitting Diode |
| ASSP | Aerosol Scattering Spectrometer Probe |
| BLR | Broad Line Region |
| LRTBAP | Long-range Trans-boundary Air Pollution |