| Acronym | Meaning |
| UM | U.S. Minor Outlying Islands (postal Symbol; ISO 3166 Digram) |
| FIBUA | Fighting In Built-Up Areas |
| SVC | Secondary Visual Cortex |
| AHCPR | Agency For Health Care Policy And Research (obsolete; Replaced With AHRQ) |
| MR | Marathi Language (ISO 639-1 Code) |
| CA | California (postal Symbol) - Canada (FIPS 10-4 Country Code; ISO 3166 Digram) - Catalonia -Civil Affairs - Close Armour - Computer Associates - Counter-Air |
| ZN | Zeptonewton |
| ILE | Interlingue Language (ISO 639-2 Code) |
| YS | Yoctosecond |
| JOPES | Joint Operations Planning And Execution System |