| Acronym | Meaning |
| IPHAS | The INT/WFC Photometric H-alpha Survey Of The Northern Galactic Plane |
| GCFR | Gas-cooled Fast Reactor |
| IHF | Inhomogeneous Hartree-Fock |
| LAD | Left Anterior Descending |
| SHEED | Scanning High-energy Electron Diffraction |
| RAMAN | Regional Atmospheric Measurement And Analytical Network |
| CGCP | Canadian Global Change Program |
| MIMS | Magnetic Field Induced Mixing Of Sublevels |
| OCE | Overall Control Efficiency |
| BWO | Backward Wave Oscillator |