| Acronym | Meaning |
| AUSB | Aerobic Upflow Sludge Blanket |
| ASF | Atomic Sensitivity Factor |
| DRS | Dielectric Relaxation Spectroscopy |
| ADARD | Acid Deposition And Atmospheric Research Division |
| MQDT | Multichannel Quantum Defect Theory |
| SXES | Soft X-ray Emission Spectroscopy |
| DGS | DiGeorge Syndrome |
| CEPA-SD | Coupled-electron-pair Approxn. (with) Single (and) Double Excitations |
| NTD | Neutron Transmutation Doping |
| ALMS | Atomic Line Molecular Spectroscopy |