| Acronym | Meaning |
| PPLO | Pleuropneumonia-like Organism |
| ISME | Ion-selective Microelectrode |
| PANAK | Peroxyacetyl Nitrate Aldehyde Ketones |
| USACE | US Army Corp Of Engineers |
| FEL | Free Electron Laser |
| PWR | Pressurized Water Reactor |
| MOE | Modulus Of Elasticity |
| LOES | Laser Optical Emission Spectroscopy |
| SC-SCF | Semiclassical Self-consistent Field |
| XEOL | X-ray Excited Optical Luminescence |