| Acronym | Meaning |
| RCISD | Restricted CI (with) Single (and) Double (excitations) |
| HEV | Hepatitis E Virus |
| ICPAEMC | International Commission For Protection Against Environmental Mutagens And Carcinogens |
| EP | Extraction Procedure |
| EML | Environmental Mutational Load |
| E-2PH-TDA | Extended Two-particle-hole Tamm-Dancoff Approxn. (green-function Method For Ionization-energy Calcns.) |
| PIES | Pollution Prevention Information Exchange System |
| QMOM | Quadrature Method Of Moments |
| CAP | Corrective Action Plan |
| LVBS | Linear Variational Basis Set (formalism In Calcns. On Scattering) |