| Acronym | Meaning |
| DY | Dysprosium |
| JFACTSU | U.S. Joint Forward Air Control Training And Standards Unit |
| MU | Mauritius (ISO 3166 Digram) - Oman (FIPS 10-4 Country Code; From Muscat) |
| CP | Canadian Pacific - Check Point - Command Post |
| WH | Wehrmacht Heer (German WW2 Army Vehicle Licence Plate Code) |
| MOND | Modified Newtonian Dynamics |
| ISBN | International Standard Book Number (ISO 2108) |
| SPACECOM | (U.S.) Space Command |
| PCCB | Porsche Ceramic Composite Brake |
| POK | Plane Of Knowledge |