| Acronym | Meaning |
| SPIES | Surface Penning Ionization Electron Spectroscopy |
| FMO | Floating Molecular Orbital |
| PRM | Primary Reference Material |
| FELIX | Free Electron Laser For Infrared Experiments |
| MP2(FU) | MP2(full) Inner-core Electrons Are Included In The Approxn. |
| OECA | Office Of Enforcement And Compliance Assurance |
| CSTR | Continuously Stirred Tank Reactor |
| SFM | Scanning Force Microscopy |
| CPED | Convergent Probe Electron Diffraction |
| DLVO | Derjaguin, Landau, Verwey, And Overbeek Theory |