| Acronym | Meaning |
| RAHB | Resonance-assisted Hydrogen Bond |
| WLM | Working Level Month (for Radiation Exposure) |
| CREMSEE | Cyclotron Resonance From Microwave-induced Secondary Electron Emissions |
| TDC | Top Dead Center |
| EEA | European Environment Agency |
| HLPSA | Hazardous Liquid Pipeline Safety Act |
| DOD | Dissolved Oxygen Deficit |
| CDAF | Continuous Distributed Approximating Function |
| RSCPA | Reduced (second Order) Self-consistent Phonon Approxn. (a Green-function Calcn. Method) |
| GEMS | General Energy And Material Balance System [model] |