| Acronym | Meaning |
 | OIOC | Oriental & India Office Collections (in The British Library) |
| BALCO | Bay Area Laboratory Co-operative |
| BTU | British Thermal Unit |
| AWW | Above Water Warfare |
| J2 | Joint Intelligence Directorate |
| YK | Yoctokelvin |
| ASIO | Australian Security Intelligence Organisation -Audio Stream Input Output |
| NAVSPASUR | U.S. Naval Space Surveillance System |
| HTS | High-Temperature Superconducting Wire |
| UT | Universal Time |
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