| Acronym | Meaning |
| OSRSCF | Open-shell Restricted SCF |
| EXGF(1) | Extended Group Function(1) (model Wave Function Accounting For Electron Correlation) |
| HSC | Hyperspherical Coordinate (representation In Calcns. On Electron-atom Scattering) |
| DRAWS | Dipolar Recoupling With A Windowless Sequence |
| ICRMS | Ion Cyclotron Resonance Mass Spectrometry |
| LCRS | Leachate Collection And Removal System |
| ECLSS | Environmental Control And Life Support System |
| FNTS | Fast Neutron Transmission Spectroscopy |
| EXGEM | Extended Geminal (model Correlated Wave Function) |
| L2MS | 2-step Laser Mass Spectrometry |