| Acronym | Meaning |
| PDU | Process Development Unit |
| ROM | Regional Oxidant Model |
| EK | Extended Koopmans (method In Ionization Potential Calcns.) |
| MGD | Million Gallons Per Day |
| NCLAP | National Crop Loss Assessment Program |
| DINP | Diisononyl Phthalate |
| PGSE | Pulsed Gradient Spin Echo |
| AIPA | American Inventors Protection Act |
| IDEA | Integrated Data For Enforcement Analysis |
| GHRS | Goddard High Resolution Spectrograph |