| Acronym | Meaning |
| PFPE | Perfluorinated Polyether |
| RPS | Reemitted Positron Spectroscopy |
| REM | Rapid Eye Movement |
| TPPM | Two-pulse Phase Modulation |
| BSF | Below Sea Floor |
| NCWQ | National Commission On Water Quality |
| AOAC | Association Of Official Analytical Chemists |
| NES | Neurobehavioral Evaluation System |
| MATHEW | Mass-Consistent-3-Dimensional Wind Field |
| MET | Multichannel Eikonal Theory (in Atom Electron-impact Excitation) |