| Acronym | Meaning |
| PI | Pollution Index |
| DEM | Discrete Element Method |
| ACRS | Applied Computational Research Society |
| DMFT | Dynamical Mean-field Theory |
| OPA | Optical Parametric Amplifier |
| OUST | Office Of Underground Storage Tanks |
| NTU | Nephelometric Turbidity Unit |
| RTPM | Radical Triplet Pair Mechanism |
| OIC | Optical Interface Coupler |
| CSM | Continuum Solvation Model |