| Acronym | Meaning |
| SCR | Solar Cosmic Rays (related To Spacecraft And Space Travel) |
| OBS-MCSC | Optimized Basis Set-multiconfiguration Spin Coupled |
| LEERM | Low Energy Electron Reflection Microscopy |
| SME | Static Model Exchange (approxn. In Electron-mol. Scattering) |
| BIS | Bureau Of Indian Stds. |
| PCA | Principal Component Analysis |
| DOT | Department Of Transportation |
| PLC | Phospholipase C |
| PIRAS | Polarized Infrared Absorption Spectroscopy |
| CABG | Coronary Artery Bypass Graft |