| Acronym | Meaning |
| RHI | Range-height-indicator |
| MIT | Massachusetts Institute Of Technology |
| AOD | Argon-oxygen Decarbonization |
| ADC | Authorized Derivative Classifier |
| ACA | American Conservation Association |
| ETA | A Subsidiary Of Control Data Corporation That Manufactures Supercomputers |
| IRS | Indian Remote-sensing Satellite |
| EO-ICWG | Earth Observation International Coordination Working Group |
| WRL | Willow Run Laboratories |
| CCM1 | Community Climate Model 1 |