| Acronym | Meaning |
| CILS | Collision-induced Light Scattering |
| PREVENT | Pacific Northwest Regional Visibility Expt. Using Natural Tracers |
| TPSR | Temp.-programmed Surface Reaction |
| AGB | Asymptotic Giant Branch (stars) |
| CPD | Cyclobutane Pyrimidine Dimer |
| AAEE | American Academy Of Environmental Engineers |
| SCRP | Specific Chelation |
| HOSE | Harmonic Oscillator Stabilization Energy |
| PWTF | Plane-wave Translation Factors (in Atom-ion Inelastic Collisions) |
| PP | Pariser Parr |