| Acronym | Meaning |
| P3I OR P?I | PrePlanned Product Improvement |
| DODD | U.S. Department Of Defense Directive |
| UIG | Uyghur Language (ISO 639-2 Code) |
| NBCRS | NBC (Nuclear |
| OSCE | Organisation For Security And Cooperation In Europe |
| FRCP | Federal Rules Of Civil Procedure |
| YE | Yemen (ISO 3166 Digram) |
| PR | Public Relations -Puerto Rico (postal Symbol; ISO 3166 Digram) |
| WRS | Worldwide Reference System |
| BL | Bolivia (FIPS 10-4 Country Code) -British Leyland |