| Acronym | Meaning |
| GRVB | Generalized Resonating Valence Bond |
| RLPPS | Reactive Low-pressure Plasma Spraying |
| RIA | Relative Ion Abundance |
| BSI | British Standards Institute |
| VPAM | Variable Phase Amplitude Method (for Electron-atom Scattering) |
| SAP | Scientific Advisory Panel (FIFRA) |
| WWEMA | Waste And Wastewater Equipment Manufacturers Association |
| GBS | Generalized Bohr-Sommerfeld (quantization Method) |
| DZHD | Double-zeta Huzinaga-Dunning (wave Functions) |
| PIANO | Paraffin |