| Acronym | Meaning |
| PITST | Path Integral Transition State Theory |
| BOA | Bond Orientational Anisotropy |
| COF | Coefficient Of Friction |
| OPIA | Optical Precision Instrument Associates |
| TERRACE | Terrestrial Runoff Modeling For Risk Assessment Of Chem. Exposure |
| MCF | Mutually Consistent Field Method (in Calcns. On Intermolecular Interactions) |
| INDO | Intermediate Neglect Of Differential Overlap |
| NBMO | Nonbonded Molecular Orbital |
| CNDO/B | Complete Neglect Of Differential Overlap / Boyd |
| USANS | Ultra-small-angle Neutron Scattering |