| Acronym | Meaning |
| AMD | Automated Multiple Development |
| VCA | Virtual Crystal Approximation |
| CCFO | Charge-charge Flux Overlap (model In Mol.-property Calcns.) |
| RSPA | Research And Special Programs Administration (Dept. Of Transportation) |
| GBS | Grain Boundary Sliding |
| PSEP | Polyhedral Skeletal Electron Pair (for Metal Clusters) |
| CFM | Charge Force Microscope |
| HAT | Humid-air Turbine [cycle] |
| BCP | Bromocresol Purple |
| SSC | Sulfide Stress Cracking |