| Acronym | Meaning |
 | RISC | Reduced Instruction Set Computer |
| NAAWS | NATO Anti-Air Warfare System |
| CIAO | Critical Infrastructure Assurance Office - Component-Integrated ACE ORB |
| ISU | Integrated Sight Unit - International Skating Union |
| GOES | Geostationary Operational Environmental Satellite |
| VUT | Vanuatu (ISO 3166 Trigram) |
| WRVS | Women's Royal Voluntary Service |
| AGTS | Advanced Gunnery Training System |
| UNESCO | United Nations Educational |
| ICO | Intermediate Circular Orbit |
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