| Acronym | Meaning |
| ZBL | Ziegler, Biersack And Littmark |
| TWTDS | Treatment Works Treating Domestic Sewage |
| MSA | Many-trajectory Semiclassical Approxn. (in At.-collision Theory) |
| PDM3.1 | Probabilistic Dilution Model Version 3.1 |
| SCM | Surface Complexation Model (of Adsorption) |
| GLIMPSE | Galactic Legacy Infrared Mid-Plane Survey Extraordinaire |
| NTO | Natural Transition Orbital Method (for Excited States) |
| TNS | 6-p-Toluidino-2-naphthalenesulfonic Acid |
| ERCAM | Emission Reduction And Cost Analysis Model |
| ACES | Annual Cycle Energy Storage System |