| Acronym | Meaning |
| HGTF | Hermite Gaussian-type Function |
| EINECS | European Inventory Of Existing Commercial Chemical Substances |
| PISCES | Passive In-Situ Concn. Extn. Sampler |
| FELIX | Free Electron Laser For Infrared Experiments |
| ECMO | Extracorporeal Membrane Oxygenation |
| GAMOT | Global Acoustic Mapping Of Ocean Climate |
| TDHG | Time-dependent Hartree Grid (quantum Method) |
| RCA | Rolling-circle Amplification |
| VLBI | Very Long Baseline Interferometry |
| BAGI | Backscatter Absorption Gas Imaging |