| Acronym | Meaning |
 | HURD | Hird Of Unix-Replacing Daemons (cf. Hird) |
| PERL | Usually Lower Case Practical Extraction And Report Language |
| UPU | Universal Postal Union |
| AAFC | U.S. Army Air Corps Ferrying Command (1941-1942) - All-America Football Conference (1946?1949) |
| G6 | Assistant Chief-of-Staff |
| MCO | Monaco (ISO 3166 Trigram) -Movement Control Officer -Major Combat Operation |
| WEZ | Weapon Engagement Zone |
| PDRY | People's Democratic Republic Of Yemen (obsolete Since 1990) |
| ASIC | Aviation Security Identification Card |
| NY | New York (postal Symbol) |
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