| Acronym | Meaning |
| CTM | Conditional Test Method |
| AEGIS | ATM European Group For Improvement Of Scenarios |
| IHP | Inositol Hexaphosphate |
| DIPE | Diisopropyl Ether |
| MR-L-CEPM | Multireference-linearized-coupled Electron Pair Method |
| GEK | Geomagnetic Electrokinetograph |
| GASP | Gamma Astronomy At The South Pole |
| SPLEED | Spin Polarized Low-energy Electron Diffraction |
| BBMV | Brush-border Membrane Vesicle |
| NWWA | Northwest Water Authority (UK) |