| Acronym | Meaning |
| LPA | Lipoprotein A |
| APCA | Air Pollution Control Association |
| BAPMON | Background Air Pollution Monitoring Network |
| NPV | Net Present Value {economics} |
| QCISDT | Quadratic CI (with) Single (and) Double (and) Triple (excitations) |
| CESE | Complex Eigenvalue Shroedinger Equation |
| FFFSG | Fossil Fuel Fired Steam Generator |
| EIS | Eikonal Initial State (in Scattering Calcns.) |
| GVB-MDSA | Generalized Valence Bond-molecular Dynamics Simulated Annealing |
| PE | Performance Evaluation |