| Acronym | Meaning |
| MCTDH | Multiconfigurational Time-dependent Hartree (theory) |
| MST | Mean Survival Time |
| ASSIST | Abstract Semi-Markov Specification Interface To The SURE Tool [propulsion] |
| COMA | Cyclic Olefin Maleic Anhydride |
| ISO | IR Space Observatory |
| MMC | Molecular Mechanics For Clusters Model |
| DEHP | Bis(2-ethylhexyl) Phthalate |
| CCT | Clean Coal Technology |
| FMS | Frequency Modulation Spectroscopy |
| TOF | Turnover Frequency |