| Acronym | Meaning |
| NAPRI | North American Pollutant Release Inventory |
| IDMS | Isotope Dilution Mass Spectrometry |
| NOLMOS | Nonorthogonal (strictly) Local Molecular Orbitals |
| IAP | Intermittent Aeration Process (for Waste Treatment) |
| COPNA | Condensed Polynuclear Aromatics |
| MCP2P | Multiconfigurational Particle-particle Propagator |
| CWC | United Nations Chemical Weapons Convention |
| PE | Population Equivalent (in Wastewater Treatment) |
| SACRED | Silicon Array For ConveRsion Electron Detection |
| CCSC | Charge And Configuration Self-consistency |