| Acronym | Meaning |
| 2DEG | Two-dimensional Electron Gas |
| SEP | Solar Energetic Particle (event) |
| PAGE | Policy Analysis Of The Greenhouse Effect |
| SNO | Spin Natural Orbital |
| CAPD | Continuous Ambulatory Peritoneal Dialysis |
| WATOC | World Association Of Theoretically Oriented Chemists |
| APIMS | Atmospheric Pressure Ionization Mass Spectrometry |
| CI | Configuration Interaction |
| ISDN | Integrated Services Digital Network |
| UMP | Unrestricted Moeller-Plesset |