| Acronym | Meaning |
| ECM | Electrochemical Machining |
| NECAC | National Environmental Compliance Assistance Center |
| IMEP | International Measurement Evaluation Program |
| FEL | Fixed Emission Limit |
| FETI | Fire, Explosion And Toxicity Index |
| MSZ | Magnesia-stabilized Zirconia |
| VPC | Vapor-phase Chromatography |
| FLASH | Fluorescent Airborne Stratospheric Hygrometer |
| AMOS | Automated Meteorological Observing System |
| IFRTS | Internal-floating-roof Tanks |