| Acronym | Meaning |
| AUSB | Aerobic Upflow Sludge Blanket |
| CIG | Commonwealth Industrial Gases Limited (Australia) |
| PBL | Peripheral Blood Lymphocyte |
| IMFP | Inelastic Mean Free Paths |
| RHDV | Rabbit Hemorrhagic Disease Virus |
| AD | Alzheimer Disease |
| RCS | Reaction Control System |
| DDM | Decoupled Direct Method |
| BNF | Biological Nitrogen Fixation |
| MLD | Metachromatic Leukodystrophy |