| Acronym | Meaning |
 | RBOC | Regional Bell Operating Company (Baby Bell) |
| UJTL | Universal Joint Task List |
| ROP | Render Output Pipeline |
| PIR | Priority Intelligence Requirement |
| SSRN | Nuclear-Powered Radar Picket Submarine (retired US Navy Hull Classification) |
| SDR | Strategic Defence Review |
| PCI | U.S. Pacific Islands Trust Territory (ISO 3166 Trigram; Obsolete 1986) -Peripheral Component Interconnect (computer Bus) |
| NYA | Chichewa Language (ISO 639-2 Code) |
| SAVAK | Sazamane Etelaat Va Amniate Kechvar (Iranian Security And Intelligence Service) |
| CNI | Communications |
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