| Acronym | Meaning |
| DSW | Dirac Scattered-wave (often As SCF-X(alpha)-DSW Method) |
| CCI | Contracted Configuration Interaction |
| SAPRC | Statewide Air Pollution Research Center |
| SNG | Synthetic Natural Gas |
| ARAC | Atmospheric Release Advisory Capability |
| LEEPS | Low Energy Electron Point Source |
| MRAIRS | Multiple Reflection-absorption Infrared Spectroscopy |
| ASBOW | Axial Spin Bond-order Wave |
| PANNA | Pesticide Action Network North America |
| DARC | Description |