| Acronym | Meaning |
| ECCM | Extended Coupled-cluster Method |
| WADR | Waste Acid Detoxification And Reclamation |
| DEM | Discrete Element Method |
| EIRFT | Extended Inversion-recovery Fourier Transform |
| PSD | Passive Sampling Device(s) (for Air Pollution) |
| GPRS | General Packet Radio Service |
| AKDDQ | Aluminum Killed Deep Drawing Quality |
| FIGLU | Formiminoglutamic Acid |
| DHF | Derivative Hartree-Fock (quantum Theory In Calcns. On Mols.) |
| APHA | American Public Health Association |