| Acronym | Meaning |
| ICBA | Improved (final-state) Coulomb Born Approximation |
| BIOS | Biological Innovation For Open Society |
| OB/OD | Open Burn/open Detonation |
| RATM | Renormalized Average T-matrix (for D.-of-states Calcns.) |
| DMRG | Density Matrix Renormalization Group (quantum Calcn. Method) |
| CDD | Chlorinated Dibenzo-p-dioxin |
| HAD | Hollow Anode Discharge |
| ROS | Restricted (or Roothaan) Open-shell (Hamiltonian) |
| LEEP | Low-energy Solvent Extraction Process |
| CDOM | Chromophoric Dissolved Organic Matter |