| Acronym | Meaning |
| PR | Praseodymium |
| SIP | Session Initiation Protocol - State Implementation Plan - System Improvement Program - Systematic Investment Plan |
| MWK | Malawi Kwacha (ISO 4217 Currency Code) |
| DRAM | Dynamic Random Access Memory (dee-ram) (computing) |
| EMP | ElectroMagnetic Pulse |
| LDL | Low-Density Lipoprotein |
| VI | 6 (in Roman Numerals) - British Virgin Islands (FIPS 10-4 Territory Code) - U.S. Virgin Islands (postal Symbol; ISO 3166 Digram) -vide Infra (Latin |
| ARBA | Army Review Boards Agency |
| AY | Antarctica (FIPS 10-4 Territory Code) |
| TA | Tantalum |