| Acronym | Meaning |
| HPET | High Performance Engineering Thermoplastic |
| IMPEACH-MBC | Improved Performance Accordion Heteronuclear Multiple-bond Correlation |
| SCCR | Self-consistent Current Relaxation (in Electronic Dynamic Structure Factor Calcns.) |
| ECSPM | Electrochemical Scanning Probe Microscopy |
| FP | Fluorescence Polarizationpar |
| PMP | Peroxisomal Membrane Protein |
| SEMPI | Singly Excited Modified Perturbation Theory |
| SDA | Subsurface Disposal Area |
| ISCST | Industrial Source Complex Short Term Model (US EPA) |
| SIC | Std. Industrial Code |