| Acronym | Meaning |
| FEL | Free Electron Laser |
| OPPT | Office Of Pollution Prevention And Toxics (US EPA) |
| LENA | Low-energy Neutral Atom |
| EXGEM | Extended Geminal (model Correlated Wave Function) |
| CLC | Cholesteric Liquid Crystal |
| SESFOD | Selective Excitation With Single Frequency Off Resonance Decoupling |
| MWPC | Multiwire Proportional Chamber |
| IPC | International Patent Classification |
| PBCIMS | Particle Beam Chem. Ionization Mass Spectrometry |
| MCPA | 2-methyl-4-chlorophenoxyacetic Acid |