| Acronym | Meaning |
 | JROCM | JROC Memorandum |
| GOA | General Of The Army (United States Only) -Gun Owners Of America |
| CINEOS | Campo Imperatore Near-Earth Objects Survey |
| IM | Isle Of Man (FIPS 10-4 Territory Code) -Instant Message (internet Speech) |
| PBCK | Problem Between Chair And Keyboard (computer Help Desk In-joke) |
| SDH | Synchronous Digital Hierarchy |
| SPQR | Senatus Populus Que Romanus (Latin The Senate And The People Of Rome) |
| LLAD | Low Level Air Defence |
| TPTB | The Powers That Be (often Used To Refer To The People Responsible For The Content Of TV Series Or Movies) |
| AC | Actinium |
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