| Acronym | Meaning |
| IWG | International Working Group |
| ULEV | Ultra Low Emission Vehicle |
| DIOS | Desorption-ionization On Silicon |
| MCTDH/BSE | MCTDH (with) Basis Set Expansion |
| UW-PG | Uniformly Weighted Planar Grid (method In Calcns. Of Electron-momentum Distributions) |
| HWERL | Hazardous Waste Engineering Research Laboratory (USEPA Cincinnati) |
| CAAA | Clean Air Act Amendments (of 1990) |
| CMX | Connected-moments Expansion |
| UBFF | Urey-Bradley Force Field |
| ISIS | Image-selected In Vivo Spectroscopy |