| Acronym | Meaning |
| HSK | Hylleraas Scherr Knight (variational Perturbation Procedure) |
| NOMS | National Organics Monitoring Survey (US EPA 1976-1977) |
| TDVP | Time-dependent Variational Principle (in Scattering Calcns.) |
| SCLM | Scanning Confocal Laser Microscopy |
| ATF | Advanced Toroidal Facility |
| IDDB | Investigational Drugs Database |
| LEV | Low Emission Vehicle |
| BSE | Backscattering Electrons |
| EQA | External Quality Assessment |
| EEM | Elastic Emission Machining |