| Acronym | Meaning |
| BOL | Bolivia (ISO 3166 Trigram) |
| SEN | Senegal (ISO 3166 Trigram) -Small Extension Node |
| EP | Electronic Protection |
| AIM | Many |
| WRT | World Rally Team |
| CN | Canadian National (railway) -China (ISO 3166 Digram) - Comoros (FIPS 10-4 Country Code) |
| ZF | Zettafarad |
| OAS | Organization Of American States |
| EKG | Electrocardiogram (from German Elektrokardiogramm) |
| NIAMD | National Institute Of Arthritis And Musculoskeletal Diseases |