| Acronym | Meaning |
 | FAT | Field Artillery Tractor - File Allocation Table |
| ESA | Electro-Spark Alloying - Endangered Species Act - European Space Agency |
| MOW | Maintenance Of Way (also MW) |
| FFC | Free For Chat |
| NDU | National Defense University (Washington |
| GEOS | Graphical Environment Operating System |
| PBCK | Problem Between Chair And Keyboard (computer Help Desk In-joke) |
| CUPS | Common Unix Printing System |
| MECC | Minnesota Educational Computing Consortium (later Corporation |
| APHIS | Animal And Plant Health Inspection Service |
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