| Acronym | Meaning |
| SCANIIR | Surface Composition Analysis By Neutral And Ion Impact Radiation |
| GEMAP | Geocoded Emission Modeling And Projection |
| VBSCF | Valence Bond Self-consistent Field |
| TIME | Transferred Ionized Molten Energy Process (for Metal Arc Welding) |
| MBBR | Moving Bed Biofilm Reactor |
| NAMF | Non-asbestos Mineral Fibers |
| PIRSS | Polarization IR Surface Spectroscopy |
| SCMPS | Spin-corrected Moeller-Plesset Nth-order |
| ECM | Exchange-charge Model |
| RREL | Risk Reduction Engineering Laboratory |