| Acronym | Meaning |
 | AGC | Apollo Guidance Computer - Automatic Gain Control |
| LMS | London Mathematical Society - London |
| MCM | Mine Counter-Measures |
| OO | Object Oriented - Over & Out |
| DAQ | Data Acquisition -Delivered Audio Quality |
| ACCAC | Awdurdod Cymwysterau |
| DISA | U.S. Defense Information Systems Agency |
| YS | Yottasecond |
| OSIA | (U.S.) On-Site Inspection Agency |
| HPA | UK Health Protection Agency |
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