| Acronym | Meaning |
| PPI | Proton Pump Inhibitor |
| MIG | Metal Inert Gas (welding) |
| PRM | Primary Reference Material |
| LOEL | Lowest-Observed-Effect Level |
| VPD | Vapor Phase Decomposition |
| CFHT | Canada-France-Hawaii Telescope |
| OSIRIS | Optical Spectrograph And IR Imaging System |
| IGES | Institute Of Global Environment And Society |
| TAFI | Thrombin Activatable Fibrinolysis Inhibitor |
| LSDFT | Local Spin Density Functional Theory |