| Acronym | Meaning |
| PSEP | Polyhedral Skeletal Electron Pair (for Metal Clusters) |
| PLSR | Partial Least-squares Regression |
| HRAP | High Rate Algal Pond |
| DSPSE | Deep Space Probe Science Experiment |
| SCPA | Single-site Coherent-potential Approximation (for Electronic Structure Calcns.) |
| NPRI | National Pollutant Release Inventory |
| DAVES | Desorption And Vapor Extraction System |
| NLSD | Nonlocal Spin Density (functional Theory) |
| BCDF | B Cell Differentiation Factor |
| BSCCO | Bismuth Strontium Calcium Copper Oxide |