| Acronym | Meaning |
| ASFF | Aerated Stationary Or Submerged Fixed-film (wastewater Treatment) |
| EIL | Electron Induced Luminescence |
| UDWBA | Unitarized Disorted Wave Born Approxn. (for Scattering) |
| AAA | Abdominal Aortic Aneurysm |
| DEA | Drug Enforcement Administration |
| QPT | Quasiparticle Tunneling |
| MASERATI | Middle Atmosphere Spectrometric Experiment On Rockets For Analysis Of Trace Gas Influences |
| PHWR | Pressurized Heavy Water Reactor |
| CCSDTQ | CCSDT (with) Quadruple (excitations) |
| MRO | Medium Range Order |