| Acronym | Meaning |
| CCO | Coupled-channel-optical (potential |
| HDC | Histidine Decarboxylase |
| SACM | Statistical Adiabatic Channel Method (in Ion-mol. Reactions) |
| ELCD | Electrolytic Conductivity Detection |
| SADPT | Symmetry-adapted Double Perturbation Theory |
| VVHAP | Very Volatile Hazardous Air Pollutant |
| COMAH | Control Of Major Accident Hazards |
| DMRG | Density Matrix Renormalization Group (quantum Calcn. Method) |
| NORA | National Occupational Research Agenda |
| MOE | Margin Of Exposure |