| Acronym | Meaning |
| OLCAO | Orthogonalized Linear Combination Of Atomic Orbitals |
| SRA | Sudden Rotation Approximation |
| DRAW | Digital Read After Write |
| SEE | Static Exact Exchange (approxn. In Electron-mol. Scattering) |
| HAMS | Helium Atoms Measurement System |
| BGK | Bhatnagar-Gross-Krook (kinetic-theory Model For Reactive Collisions) |
| HRM | Hydrochlorination Reaction Mixt. |
| REM | Rapid Eye Movement |
| HWGTF | Hazardous Waste Groundwater Test Facility |
| ACSL | Advanced Continuous Simulation Language |