| Acronym | Meaning |
 | IMU | International Mathematical Union |
| PSV | Philips Sport Vereniging (Dutch For Philips Sports Union) - Public Service Vehicle |
| SI | Sinhalese Language (ISO 639-1 Code) |
| CITS | Combat Identification Training System |
| MMS | Multimission Modular Spacecraft |
| LUCA | Last Universal Common Ancestor |
| CSI | See Entry |
| JROC | Joint Requirements Oversight Council |
| UAH | Ukrainian Hryvnia (ISO 4217 Currency Code) |
| LHD | Litterarum Humaniorum Doctor (Latin |
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