| Acronym | Meaning |
| SODW | Second-order Distorted Wave (in Electron-atom Scattering) |
| RASSCF | Restricted Active Space SCF |
| SMR | Standardized Mortality Ratios |
| GDP | Gross Domestic Product |
| PVMS | Pressure Vessel Management System |
| SPCC | System Performance Check Compound |
| DSPEC | Dye-sensitized Photoelectrochemical |
| DIB | Diffuse Interstellar Band |
| LIBD | Laser-induced Breakdown Detection |
| STPD | Short Ton/day |