| Acronym | Meaning |
 | OIOC | Oriental & India Office Collections (in The British Library) |
| IWC | International Whaling Commission |
| ICC | Integrated Command And Control - International Criminal Court - International Cricket Council - Interstate Commerce Commission |
| AMFRS | Advanced Multi-Function Radio Frequency System - Automatic Multisensor Feature-based Recognition System |
| GTM | Guatemala (ISO 3166 Trigram) |
| ASTM | American Society For Testing And Materials |
| DB | Database - Deutsche Bahn |
| C2V OR C?V | Command And Control Vehicle |
| IJWP | Interim Joint Warfare Publication |
| MM | Millimetre |
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