| Acronym | Meaning |
| RAM | Restricted Area Molding |
| PD | Photoelectron Diffraction |
| MERT | Microelectrical Resistance Tomography |
| SACM | Statistical Adiabatic Channel Method (in Ion-mol. Reactions) |
| RAN | Residual Acrylonitrile |
| UATMP | Urban Air Toxics Monitoring Program |
| ECS-EP | Energy-corrected Sudden-exponential Polynomial (scaling Law) |
| MP2(FU) | MP2(full) Inner-core Electrons Are Included In The Approxn. |
| SOMO | Singly Occupied Molecular Orbital |
| FCVA | Filtered Cathodic Vacuum Arc |