| Acronym | Meaning |
| ARIAP | Acid Rain Impact Assessment Program |
| PDR | Photodissociation Region |
| EIMS | Electron Impact Mass Spectrometry |
| RSRG | Real-space Renormalization Group (method In Calcn. Of Green Functions For Electrons In Crystals) |
| EICP | Enclosed Inductively Coupled Plasma |
| HWRAP | Hazardous Waste Remedial Actions Program |
| PHAS | Pollution Hazard Assessment System |
| ANDA | Abbreviated New Drug Application |
| JAPIO | Japan Patent Information Organization |
| IGFET | Insulated Gate Field Effect Transistor |