| Acronym | Meaning |
| MCSF | Macrophage Colony Stimulating Factor |
| RTKNET | Right-to-Know Network |
| NTO | Natural Transition Orbital Method (for Excited States) |
| ARNT | Aryl Hydrocarbon Receptor Nuclear Translocator |
| ATTA | Atom Trap Trace Analysis |
| CAM | Complex Angular Momentum (for Rotationally Inelastic Scattering) |
| SARM | Synthetic Analytical Reference Matrix (US EPA) |
| PSMS | Plasma Source Mass Spectrometry |
| AHW | Atomic Hydrogen Welding |
| TDDB | Time Dependent Dielectric Breakdown |