| Acronym | Meaning |
 | NASA | National Aeronautics And Space Administration |
| CHU | Old Church Slavonic Language (ISO 639-2 Code) |
| IAB | International Association For Biologicals |
| XBA | European Composite Unit (EURCO; Bonds Market Unit) (ISO 4217 Currency Code) |
| CFG | Context-free Grammar - Control Flow Graph |
| FOO | Forward Observation Officer |
| WTO | World Trade Organization |
| 4GL | Fourth-generation Programming Language |
| DIV | Dhivehi Language (ISO 639-2 Code) |
| HESV | Heavy Engineering Support Vehicle |
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