| Acronym | Meaning |
| DCP-OES | Direct Coupled Plasma-optical Emission Spectroscopy |
| BSSEC | Basis-set Superposition Error Correction |
| WCOT | Wall Coated Open Tubular Columns |
| EMTS | Environmental Monitoring Testing Site |
| TOM | Transition Operator Method |
| EPS | Electric Power System |
| CCM | Complex Coordinate Method (in Calcns. On Quantum Tunneling) |
| POAV | Pi Orbital Axis Vector Analysis (electronic-structure Model) |
| NME | New Molecular Entity |
| SCISAS | Size Classifying Isokinetic Sequential Aerosol Sampler |