| Acronym | Meaning |
| PMP | Peroxisomal Membrane Protein |
| MARS | Membrane Anaerobic Reactor System |
| SCSAG | Small-curvature Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| MRF | Municipal Recycle Facility |
| QCA | Quasichemical Approxn. (in Calcns. On Semiconductors) |
| STRAT | Stratospheric Tracers Of Atmospheric Transport |
| BPCT | Best Practicable Control Technology |
| SOBO | Spin-orbit (coupled) Bond Orbital |
| PRIME | Plume Rise Model Enhancements |
| NPTN | National Pesticide Telecommunications Network |