| Acronym | Meaning |
| CEPA-VAR | Coupled-electron-pair Approxn.-variational |
| ECGF | Endothelial Cell Growth Factor |
| GRAPE | Gamma Ray Attenuation Porosity Evaluator |
| ATD | Atmospheric Technology Division |
| EDD | Enforcement Decision Document |
| NIMS | Negative Ion Mass Spectrometry |
| GISS | Goddard Institute For Space Studies |
| FBF | Forearm Blood Flow |
| MBRS | Molecular Beam Relaxation Spectrometry |
| PCF | Plasma Centrifugal Furnace |