| Acronym | Meaning |
| JESS | Joint Expert Speciation System |
| PSES | Pretreatment Standards For Existing Sources |
| CRP | Carbon Fiber Reinforced Plastics |
| DAF | Distributed Approximating Functional (in Study Of Quantal Wave-packet Propagation) |
| SDI | Selective Dissemination Of Information |
| HSGC | Headspace Gas Chromatography |
| RDA | Representational Difference Analysis |
| X-SAR | X-Band Synthetic Aperture Radar |
| BUN | Blood Urea Nitrogen |
| RIS | Rotational Isomeric State |