| Acronym | Meaning |
| GMO | Genetically Modified Organism |
| FFZE | Free-flow Zone Electrophoresis |
| OSWER BBS | OSWER Electronic Bulletin Board System (see CLU-IN) |
| MOUSE | Method Of Underground Solute Evaluation |
| ERA | Environmental Risk Assessment |
| GPRS | General Packet Radio Service |
| PMS | Premenstrual Syndrome |
| PCI | Positive-ion Chemical Ionization (mass Spectrometry) |
| MACAWS | Multi-center Airborne Coherent Atmospheric Wind Sensor |
| NPRA | National Petroleum Refiners Association |