| Acronym | Meaning |
| NEHA | National Environmental Health Association |
| GAMP | Global Atmospheric Measurements Program |
| BAC | Bacterial Artificial Chromosome |
| QR-MWH | Quasi-relativistic Mulliken-Wolfsberg-Helmholz Method |
| IGF | Insulin-like Growth Factor |
| PSI | Pollution Standard Index |
| CBI | Confidential Business Information |
| PPQ | Parts Per Quadrillion |
| QAS | Quality Assurance Standard |
| GISNET | Geographic Information Systems Bulletin Board |