| Acronym | Meaning |
| EMR | Electomagnetic Radiation |
| DEM | Digitized Elevation Models |
| ALEXIS | Array Of Low-energy X-ray Imaging Sensors |
| NAC | NCAR Administrators Committee |
| FDCA | Federal Drug And Cosmetics Act |
| MLM | Time-varying Horizontal Model Of The Lavoice Type |
| ACATS | Airborne Chromatograph For Atmospheric Trace Species |
| PSAC | President's Science Advisory Committee |
| GEU | Gyro Electronics Unit |
| IMS | Information Management System |