| Acronym | Meaning |
| AMEM | A.D.L. Migration Estimation Model |
| EASC | Extended Anaerobic Sludge Contact |
| LSS | Laser Synchrotron Source |
| SXAPS | Soft X-ray Appearance Potential Spectroscopy |
| THFA | Target Hartree-Fock Approximation |
| ETEAO | Even-tempered Exponential Atomic Orbital |
| ECISDT | Size-extensive CI With Single And Double And Triple Excitations |
| ISOF | Insoluble Org. Fraction (e.g. |
| APCD | Air Pollution Control Device |
| MPIF | Myeloid Progenitor Inhibitory Factor |