| Acronym | Meaning |
| EAAPS | Electron-excited Auger-electron Appearance Potential Spectroscopy |
| EUMAC | European Modeling Of Atmospheric Constituents |
| GCC | Global Climate Coalition |
| PANNA | Pesticide Action Network North America |
| SCPM | Scanning Chemical Potential Microscopy |
| ARS | Autonomously Replicating Sequence |
| PLZT | Lead Lanthanum Zirconate Titanate |
| AGCM | Adiabatic Generator Coordinate Method (for Energy Level Calcn.) |
| MSO | Molecular Spin Orbital |
| POA | Peierls-Onsager Approxn. (in Electronic Structure Calcns.) |