| Acronym | Meaning |
| MCQDPT2 | Second-order Multiconfigurational Quasi-degenerate Perturbation |
| NIST | National Institute Of Standards And Technology (formerly NBS) |
| GMC | Giant Molecular Cloud |
| ZRL | Zero Risk Level |
| VASS | Variable Angle Sampling Spinning |
| BEST | Basic Extractive Sludge Treatment |
| ICC | Intrahepatic Cholangiocarcinoma |
| LFC | Load Frequency Control (battery Systems) |
| SGM | Scale Glass Melter |
| MCRRPA | Multiconfiguration Relativistic Random Phase Approxn. |