| Acronym | Meaning |
| BID | Buoyancy Induced Dispersion |
| ORD | Office Of Research And Development (USEPA) |
| NASO | Nasmyth Adaptive Optics System |
| SINDO/F | SINDO Free Of Empirical Parameters |
| WRAC | Waste Reduction Audit Checklist (component Of WRAS) |
| AOAC | Association Of Official Analytical Chemists |
| PBSS | Porous Bed Biomass Support System |
| NBD | Nucleotide Binding Domain |
| SSCP | Single-strand Conformation Polymorphism |
| ASM | Activated-sludge Model |