| Acronym | Meaning |
| ACL | Alternative Concentration Limit |
| EGSB | Expanded Granular Sludge Bed |
| MSS | Multispectral Scanner |
| OMBE | Organic Molecular Beam Epitaxy |
| CHAP | Chronic Hazard Advisory Panel |
| EBIR | Energy Based Integral Retention (in Electronic-structure Calcns.) |
| CNPPA | Commission On National Parks And Protected Areas |
| STO NG | (n = A Number) Slater Type Orbitals Obtained By Using N Gaussian Functions |
| MRLCC | Multireference Linearized Coupled Cluster |
| LIVA | Light-induced Voltage Alteration |