| Acronym | Meaning |
| ARTCC | Air Route Traffic Control Center |
| OCR | Optical Character Recognition |
| NIN | Nine Inch Nails (band) |
| ITA | Italy (ISO 3166 Trigram) |
| ASDIC | Allied Submarine Detection Investigation Committee (Sonar) |
| KY | Kyrgyz Language (ISO 639-1 Code) |
| FASD | Fetal Alcohol Spectrum Disorder |
| AIR | Aircraft Inventory Record |
| HK | Hong Kong (ISO 3166 Digram; FIPS 10-4 Territory Code) |
| VANOS | Variable Nockenwelle System |