| Acronym | Meaning |
| CMS | Complete Model Space (in Many-body Calcns.) |
| CAAA | Clean Air Act Amendments (of 1990) |
| WOHL | Wisconsin Occupational Health Laboratory |
| MERD | Mine Emergency Responsiveness Development |
| PCI | Perturbative Configuration Interaction |
| DYANA | Dynamics Algorithm For NMR Applications |
| CGC | Capillary Gas Chromatography |
| HAT | Humid-air Turbine [cycle] |
| CNN | Computational Neural Network |
| UKMO | United Kingdom Meteorological Office |