| Acronym | Meaning |
| APEO | Alkylphenol Ethoxylates |
| PIGE | Proton Induced Gamma-ray Emission |
| OMNMHCE | Organic Material Nonmethane Hydrocarbon Equivalent |
| MQED | Molecular Quantum Electrodynamics (calcn. Method) |
| NWEA | National Wood Energy Association |
| APHA | American Public Health Association |
| PRS | Perturbed Rotational State (method For Ion-mol. Collisions) |
| LDA | Local-density Approximation |
| BEAR | Business And Environmentalists In An Alliance For Recycling |
| CEMC | Canonical Ensemble Monte Carlo |