| Acronym | Meaning |
| OLPA | Orbital Local Plasma Approxn. (in Stopping Power Calcn. For Ions By Films) |
| QAPW | Quadratic Augmented Plane Wave (in Band-structure Calcn.) |
| DCA | Discriminant Component Anal. |
| GHL | Generalized Heitler-London |
| CLBO | Cesium Lithium Borate |
| AFCS | Alliance For Cellular Signaling |
| SQF | Second-quantized Formulation (in Many-body Quantum Theory) |
| FGHAZ | Fine Grain Heat-affected Zone |
| BFBR | Biological Fluidized Bed Reactor |
| PCD | Photoconductive Decay |