| Acronym | Meaning |
| AQCCT | Air Quality Criteria And Control Techniques |
| TLM | Triple Layer Model (of Adsorption) |
| RIOS | Reactive Infinite-order Sudden (at.-mol. Reactive Collisions) |
| AVLIS | Atomic Vapor Laser Isotope Separation |
| ONDOR | Optical Nuclear Double Resonance |
| INTECOL | The International Association Of Ecology |
| PESM | Photoelectron Spectromicroscopy |
| IDA | Iron Deficiency Anemia |
| HFRSPT | Hartree-Fock Rayleigh-Schroedinger Perturbation Theory |
| CIS | Characteristic Isochromat Spectroscopy |