| Acronym | Meaning |
 | ACA | American Conservation Association |
| CAL | Computer-aided Learning |
| IRCTR | International Research Centre For Telecommunication-transmission And RADAR |
| JCS | Joint Chiefs Of Staff |
| UCAR | Unmanned Combat Armed Rotorcraft |
| EPOP | European Polar Orbiting Platform |
| ACR | Active Cavity Radiometer |
| NSFNF | Non-NSF Non-funded |
| ACRIM II | Active Cavity Radiometer Irradiance Monitor |
| GVHRR | Geostationary VHRR |
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