| Acronym | Meaning |
 | CTS | Clear-To-Send - Collective Training Standards - Communications Technology Service - Contract Technical Services - Conversation Time Sharing - COSMIC Top Secret |
| TMI | Too Much Information (Internet Slang) |
| SSC | Safe |
| PPQN | Pulses Per Quarter Note (ditto) |
| EP | Electronic Protection |
| DOT | Department Of Transportation (U.S. Federal Or State) |
| YS | Yottasiemens |
| TRAP | Tactical Receive Equipment And Related Applications |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |
| ZWE | Zimbabwe (ISO 3166 Trigram) |
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