| Acronym | Meaning |
| DEM | Discrete Element Method |
| ALAPCO | Association Of Local Air Pollution Control Officials |
| PO | Polarization Orbital |
| PIDIE | Plutonium Isotopic Detn. Intercomparison Exercise |
| TFPI | Tissue Factor Pathway Inhibitor |
| PMPO | Perturbed Morse Pekeris Oscillator (model Potential) |
| EML | Environmental Mutational Load |
| DQW | Double Quantum Well |
| HQM | Hemiquantal Mechanics (in Mol. Calcns.) |
| CCSD-GF | CCSD-green Function |