| Acronym | Meaning |
| TOPSE | Tropospheric Ozone Production About The Spring Equinox |
| BALQSO | Broad Absorption Line Quasi-stellar Object |
| ALMV | Alfalfa Mosaic Virus |
| UTP | Unitary Transformation (based) Perturbation (theory) |
| NAA | Nonattainment Area |
| OIP | Optimized Inner Projection (method For Mol. Property Calcns.) |
| NAO | Natural Atomic Orbital |
| HHPN | Hydraulic High Pressure Nebulization |
| TDCC | Time-dependent Coupled-cluster |
| WLE | Wigner-Liouville Equation (in Study Of Quantum Dynamics) |