| Acronym | Meaning |
| BNN | Back-propagation Neural Network |
| HFPP | Hartree-Fock Pseudopotential |
| IDOE | International Decade Of Ocean Exploration |
| MAMU | Mobile (ambient) Air Monitoring Unit (Canada) |
| OSRHF | Open-shell Restricted-Hartree-Fock |
| BRS | Biennial Reporting System |
| WSSA | Weed Science Society Of America |
| SOGVB | Spin Optimized Generalized Valence Bond Method |
| VUV | Vacuum Ultraviolet |
| AWWA | American Water Works Association |