| Acronym | Meaning |
| SOP/ED | Split-operator Propagator (for) Electronically Diabatic (phenomena) |
| LLOD | Lower Limit Of Detection |
| APSGF | Antisymmetrical Product Of Strongly Orthogonal Group Functions (a Wave Function) |
| PSB | Product Safety Branch |
| BTCA | Best Technology Currently Available |
| PRDDO | Partial Retention Of Diatomic Differential Overlap |
| SBF | Simulated Body Fluid |
| SNS | Separation Network Synthesis (chemical Engineering Design) |
| ENCS | Existing And New Chemical Substances |
| APS | Antiphospholipid Syndrome |