| Acronym | Meaning |
| ZW | Zettawatt - Zimbabwe (ISO 3166 Digram) |
| IMNSHO | In My Not So Humble Opinion |
| QR | Quake Rally - Qualitative Reasoning - Queensland Rail - Queen's Rangers - Quick Release - Quiet Riot -Qatar Airways (IATA Airline Designator) |
| J | Joule |
| SPAAG | Self-Propelled Anti-Aircraft Gun |
| SIS | UK Secret Intelligence Service (also Known As MI6) |
| YF | Yottafarad |
| AS | American Samoa (postal Symbol; ISO 3166 Digram) - Australia (FIPS 10-4 Country Code) |
| ZH | Zettahenry |
| BID | Bis In Die (Latin |