| Acronym | Meaning |
| TBC | Two-beam Coupling |
| PESA | Proton Elastic Scattering Anal. |
| FIRF | Finite Impulse Response Filter |
| FAST | Fugitive Assessment Sampling Train |
| CA | Collision Activation |
| EBPR | Enhanced Biol. Phosphorus Removal |
| AFBBR | Anaerobic Fluidized Bed Biofilm Reactor |
| ACPAR | Angular Correlation Of Positron Annihilation Radiation |
| IDA | Interdigitated Array (microelectrodes) |
| PUFA | Polyunsaturated Fatty Acid |