| Acronym | Meaning |
| WRS | Worldwide Reference System |
| KA | Knowledge Acquisition |
| NAWC | U.S. Naval Air Warfare Center |
| OPV | Offshore Patrol Vessel |
| XVIII | Eighteen (in Roman Numerals) |
| OBX | Outer Banks (North Carolina) |
| CH | Chieftain Tank -China (FIPS 10-4 Country Code) - Switzerland (ISO 3166 Digram; From Latin Confoederatio Helvetica) |
| BZP | Benzylpiperazine |
| PITA | Pain In The Ass |
| UZ | Uzbek Language (ISO 639-1 Code) |