| Acronym | Meaning |
| OPM | Optimized Potential Model |
| FMDF | Fixed Mirror Distributed Focus (solar Concentrator) |
| MRIS | Municipal Refuse Incineration System(s) |
| SQM | Scaled Quantum Mechanics (in Ab Initio Calcns.) |
| RNA | Remediation By Natural Attenuation |
| GPSC | Gas Proportional Scintillation Counter |
| SMO | Statistical Model Of Overlap |
| HDI | High-density Inclusion |
| ATCM | Air Toxics Control Measure |
| COV | Coefficient Of Variation |