| Acronym | Meaning |
| MNDO | Modified Neglect Of Diatomic Overlap |
| GISP | Greenland Ice Sheet Precipitation |
| GME | Generalized Master Equation (in Quantum Statistical Mechanics) |
| MSWI | Municipal Solid Waste Incinerator(s) |
| MPQC | Massively Parallel Quantum Chemistry |
| CARS | Coherent Anti-Stokes Raman Spectroscopy |
| SPMP | Scanning Proton Microprobe |
| LNDO | Local Neglect Of Differential Overlap |
| APCD | Air Pollution Control District |
| WSOEA | Wallace Second-order Eikonal Approximation |