| Acronym | Meaning |
 | GALCIT | Guggenheim Aeronautical Laboratory |
| AC | Adriamycin-Cyclophosphamide (chemotherapy) - Air Conditioning - Alternating Current - Ante Christum (Latin |
| NMD | U.S. National Missile Defense |
| NRO | U.S. National Reconnaissance Office |
| UG | Uyghur Language (ISO 639-1 Code) |
| CX | Christmas Island (ISO 3166 Digram) - One Hundred And Ten (in Roman Numerals) |
| PJHQ | Permanent Joint Headquarters |
| OHHLA | Original Hip-Hop Lyrics Archive |
| KE | Kenya (FIPS 10-4 Country Code; ISO 3166 Digram) -Kinetic Energy - Knowledge Engineering |
| N | Newton - Nitrogen - North |
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