| Acronym | Meaning |
| PMS | Premenstrual Syndrome |
| WWEMA | Waste And Wastewater Equipment Manufacturers Association |
| SPMD | Semipermeable Membrane Device |
| UCC(N) | Unitary Coupled-cluster [truncated To Nth Order] |
| CSP | Cold Shock Protein |
| SWAT | Soil Water Assessment Tool |
| SAC | Symmetry-adapted Cluster (expansion Method For Calcg. Wave Functions) |
| EMCI | Envirofacts Master Chemical Integrator |
| NCPM | Noncritical Phase-matching |
| TCID50 | 50% Tissue Culture Infective Dose |