| Acronym | Meaning |
| PRCPTS | Primary Reactor Coolant Pump Trip System |
| IFAS | Integrated Fixed-film Activated Sludge |
| DWTT | Drop-weight Tear Test |
| MCQR | Multiconfigurational Quadratic Response |
| USPIO | Ultrasmall Superparamagnetic Iron Oxide |
| SCC | Standards Council Of Canada |
| GVB-MDSA | Generalized Valence Bond-molecular Dynamics Simulated Annealing |
| RDPP | Reverse Differential-pulse Polarography |
| RCISD | Restricted CI (with) Single (and) Double (excitations) |
| VPM | Variable Phase Method (for Electron-atom Scattering Calcns.) |