| Acronym | Meaning |
| ESW | Equivalent Slab Waveguide |
| FPPA | Federal Plant Pest Act |
| SSM | Synthetic Soil Matrix (US EPA) |
| ORF | Open Reading Frame (DNA Sequence) |
| PIN | Pesticide Information Network |
| ERCAM | Emission Reduction And Cost Analysis Model |
| CHEM | Chemical Collection Database (accessible Through OLS) |
| EHCO | Extended Hueckel Crystal Orbital |
| RB | Renormalized Band (method In Electronic-structure Calcns.) |
| NCEP | National Cholesterol Education Program |