| Acronym | Meaning |
| SSER | Spinless Salpeter Equation (with) Retardation |
| SOC | Superposition Of Configurations (wave Functions) |
| GLIS | Global Land Information System |
| MPR | Mannose Phosphate Receptor |
| TDMCSCF | Time-dependent MC-SCF |
| LPED | Low-pressure Electric Discharge |
| ACCDPPA | Approx. Coupled Cluster With Double Excitations Polarization Propagator Approxn. |
| RIC | Resource Conservation And Recovery Act Docket Information Center |
| WHAM | Windermere Humic Aq. Acid Model |
| PESOS | Photoelectron Spectroscopy Of The Outer Shell |