| Acronym | Meaning |
| RAS | Returned Activated Sludge |
| KEGG | Kyoto Encyclopedia Of Genes And Genomes |
| CBC | Circulating Bed Combustor (or Incinerator) |
| NGCC | Natural Gas Combined Cycle |
| AMV | Avian Myeloblastosis Virus |
| BMSC | Bone Marrow Stromal Cell |
| CMC | Coupled Multiconfiguration |
| CPB | Cardiopulmonary Bypass |
| ESQC | Elastic Scattering Quantum Chemistry |
| GRPA | Generalized Random-phase Approximation |