| Acronym | Meaning |
| APB | Antiphase Boundary (crystal Chemistry) |
| APW | Augmented Plane Wave |
| RVS-SCF | Reduced Variational Space-self-consistent Field (in Quantum Calcns. On Hydrogen Bonding) |
| DHF | Dengue Hemorrhagic Fever |
| AIGER | American Industry Government Emissions Research Consortium |
| GCDIS | Global Change Data And Information System |
| ASME | American Society Of Mechanical Engineers |
| MRF | Material Recovery Facility |
| SEE | Standard Error Of Estimate |
| CEPA-VAR | Coupled-electron-pair Approxn.-variational |