| Acronym | Meaning |
| HIPPARCOS | HIgh Precision Parallax COllecting Satellite |
| II | Two (in Roman Numerals) |
| GNU | GNU's Not Unix |
| AAP | Advanced Acquisition Plan - Allied Administrative Publication - American Academy Of Pediatrics |
| ZU | Zulu Language (ISO 639-1 Code) |
| LSVW | Light Support Vehicle |
| BID | Bis In Die (Latin |
| III | Three (in Roman Numerals) |
| DGZ | Desired Ground Zero |
| A2C2 OR A?C? | Army Airspace Command And Control |