| Acronym | Meaning |
 | CAM | Chemical Agent Monitor - Computer-Aided Manufacturing |
| DCC | Digital Command Control (model Railroading) - Direct Client-to-Client (Internet Relay Chat) - Dismounted Close Combat |
| CCRP | Command And Control Research Program |
| PIRA | Provisional Irish Republican Army |
| IUSS | Integrated Undersea Surveillance System - Integrated Unit Simulation System - International Union Of Soil Science |
| NETWARS | Network Warfare Simulation |
| LTU | Lithuania (ISO 3166 Trigram) |
| PET | Personal Electronic Transactor - Pierre Elliott Trudeau - Positron Emission Tomography (as In PET Scan) - PolyEthylene Terephthalate (plastic) -Preliminary English Test |
| OMG | Object Management Group - Oh |
| ORM | Oromo Language (ISO 639-2 Code) |
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