| Acronym | Meaning |
| PAI | Pesticide Active Ingredient |
| EMII | Enriched Mantle Component 2 (of S. R. Hart |
| PFEO | Perimeter Free Electron Orbital |
| NMSC | Non-melanoma Skin Cancer |
| CDA | Charge Density Analysis |
| CIPM | Comite International Des Poids Et Mesures |
| 7-ACA | 7-aminocephalosporanic Acid |
| PVEC | Photovoltaic Energy Conversion |
| SERODS | Surface-Enhanced Raman Optical Data Storage |
| MRT | Mean Residence Time |