| Acronym | Meaning |
| CCDC | Cambridge Crystallographic Data Center |
| CAT | Computer-aided Tomography |
| BARC | Bhabha Atomic Research Center |
| PMR | Proportional Mortality Ratio |
| OPE | Operator Product Expansion |
| CGCG | Catalog Of Galaxies And Clusters Of Galaxies |
| RMS | Root Mean Square |
| CYCLOPS | Cyclically Ordered Phase Sequence |
| QTOF | Quadrupole Time-of-flight |
| ZOAO | Zero Overlap Of Atomic Orbital Approxn. |