| Acronym | Meaning |
| SDO | Shielded Diatomic Orbital |
| ECF | Electric Crystal Field |
| DWRD | Drinking Water Research Division (EPA) |
| BPFT | Bohm-Pines-Fock-Tani (Hamiltonian In Calcns. On Plasmons) |
| AIN | Advanced Intelligent Networks |
| UFG | Ultrafine Grained |
| PCR | Photo-Conductive Resonance |
| IEV | Ion-exchange Voltammetry |
| HMM | Hazardous Materials Management |
| SEDM | State/EPA Data Management |