| Acronym | Meaning |
| FIA | Flow Injection Analysis |
| DSW | Dirac Scattered-wave (often As SCF-X(alpha)-DSW Method) |
| NPM | Nonpolar Material |
| HWIF | Hazardous Waste Incineration Facility Design And Modeling Computer Program |
| EPICA | European Project For Ice Coring In Antarctica |
| CELIAS | Charge, Element And Isotope Analysis System |
| HTU | Height Of Transfer Unit (in Packed Tower Aeration System) |
| GEXRS | Grazing-exit X-ray Spectrometry |
| GDA | Glow Discharge Atomization (for Atomic Absorption Spectrometry) |
| PDEIS | Preliminary Draft Environmental Impact Statement |