| Acronym | Meaning |
| IMC | International Meteorological Center |
| FP | Plasma Frequency |
| MTTR | Mean Time To Repair |
| RAM | Research Application Module |
| ADEOS | Advanced Earth Observing Satelite |
| PICS | Positive Ion Composition Spectrometer |
| ESSL | Earth & Sun Systems Laboratory (formerly ATD) |
| CACM | Communications Of The ACM |
| OTA | Office Of Technology Assessment |
| HBCUS | Historically Black Colleges And Universities |