| Acronym | Meaning |
| RPDWR | Revised Primary Drinking Water Regulations |
| DME | Dielectric Midgap Energy (model) |
| COSPAR | Committee On Space Research |
| PDR | Photon-dominated Region |
| IRAS | Infrared Reflection Absorption Spectroscopy |
| MODPOT | Model Potential |
| WLN | Washington Library Network |
| HAPEM | Hazardous Air Pollutant Exposure Model |
| FOURPI | Fourier Path Integral |
| MOSIGT | Metal-oxide Semiconductor Insulated Gate Transistor |