| Acronym | Meaning |
| PBA | Poly(butyl Acrylate) |
| RAA | Rigid-atom Approxn. (in Electronic Structure Calcns.) |
| MIC | Methyl Isocyanate |
| OLO | On-line Optimization |
| NSCLC | Non-small Cell Lung Cancer |
| QD-MBPT | Quasi-degenerate Many-body Perturbation Theory |
| INTERFACE II | Integrated Reliable Fault-Tolerant Control For Large Engines |
| NAME | Nuclear Accident Modeling Exercise [a Model] |
| PURPA | Public Utility Regulatory Policy Act |
| BLV | Bovine Leukemia Virus |