| Acronym | Meaning |
 | ISP | International Standardized Profile - Internet Service Provider - Information Systems Professional |
| REME | Royal Electrical And Mechanical Engineers |
| P | Pico |
| INDIGO | (U.S.) INtelligence DIvision Gaming Operation |
| J1 | Joint [Manpower &] Personnel Directorate |
| GDR | German Democratic Republic (cf. DDR) |
| SAC | Standards Activity Committee (of SISO) - U.S. Strategic Air Command (1946-1992) |
| OCN | Oncology Certified Nurse |
| PLUTO | Pipe Line Under The Ocean |
| WF | Wallis And Futuna Islands (ISO 3166 Digram) |
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