| Acronym | Meaning |
| NDOL(ND0-L) | Neglect Of Differential Overlap-azimutal Quantum Number (of Valence Ao's) |
| SIIMS | Secondary Ion Imaging Mass Spectrometry |
| SLAM | Scanning Laser Acoustic Microscopy |
| OTEQ | One-dimensional Transport With Equilibria Calculations |
| BCKA | Branched-chain Keto-acid |
| NIBSC | National Institute For Biological Standards And Control |
| FILTER | Filtration And Irrigated Cropping For Land Treatment And Effluent Reuse |
| MP2-R12 | MP2 Theory With Terms Linear In Interelectronic Distance (r12) |
| LICS | Laser-induced Continuum Structure |
| OLR | Organic Loading Rate |