| Acronym | Meaning |
| PSII | Plasma Source Ion Implantation |
| ASFF | Aerated Stationary Or Submerged Fixed-film (wastewater Treatment) |
| CCA | Channel Coupling Array (quantum Theory For Atoms And Mols.) |
| PTC | Phase Transfer Catalysis |
| CORBA | Common Object Request Broker Architecture |
| NSERC | Natural Sciences And Engineering Research Council (Canada) |
| HRAP | High Rate Algal Pond |
| IEEM | Ion-electron Emission Microscopy |
| GT | Gas Turbine |
| ACNFS | Advisory Committee On Nuclear Facility Safety |