| Acronym | Meaning |
| CCSA | Classical Cintrifugal-sudden Approxn. |
| TDRH | Time-dependent Rotated Hartree (theory) |
| GRRR | Graduated Response For Risk Reduction |
| WMTADS | Waste Management Technology Analysis Decision Support |
| ELO | Equivalent Localized Orbitals |
| AAFEGE | Asymptotically Adjusted Free-electron-gas Exchange (potential) |
| ARRP | Ammonia Removal And Recovery Process |
| CTMAB | Cetyl Trimethyl Ammonium Bromide (cationic Surfactant) |
| ICS | Inhaled Corticosteroid |
| CIBO | Council Of Industrial Boiler Owners |