| Acronym | Meaning |
| NPAH | Nitro-polycyclic Aromatic Hydrocarbon |
| C4 | Controlled Collapse Chip Connection |
| FNA | Fine-needle Aspiration |
| DME | Dropping Mercury Electrode |
| POGO | Polar Orbiting Geophysical Observatory |
| MBE | Many-body Expansion (in Mol. Potential Energy Surface Calcn.) |
| GWPS | Groundwater Protection Strategy |
| ECP-CPP | Effective Core Potential (augmented By)-core Polarization Potential |
| GHSV | Gas Hourly Space Velocity |
| HDM | House Dust Mite |