| Acronym | Meaning |
 | ARAR | Applicable Or Relevant And Appropriate |
| CAC | Central Analysis Center (NMC) |
| DC | Direct Current |
| AWF | Aging Waste Facility |
| HIAPER | High-Performance Instrumented Airborne Platform For Environmental Research |
| AWPG | Aviation Weather Products Generator |
| ITWIS | Integrated Terminal Weather Information System |
| TOS | Tiros Operational Satellite |
| ISRIC | International Soil Reference And Information Centre |
| ETAG | Educational Technologies Assistance Group |
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