| Acronym | Meaning |
| BRNO | Best Radial Natural Orbital |
| HSAB | Hard And Soft Acids And Bases |
| PAG | Periaqueductal Gray |
| ATQW | Asymmetric Triple Quantum Well Structure |
| AOML | Atlantic Oceanographic And Meteorological Laboratory (of NOAA |
| PBG | Photonic Band Gap |
| MO | Molecular Orbital |
| WAND | Wide Angle Neutron Diffraction |
| SOPITA | South Pacific Isotopic And Thermal Anomaly |
| SALSA | Scoring Algorithm For Spectral Analysis |