| Acronym | Meaning |
| CPR | Canadian Pacific Railway - CardioPulmonary Resuscitation |
| IFAP | International Federation Of Agricultural Producers |
| LOFAR | Low Frequency Analysis And Recording |
| Z | Zetta |
| ERTS | Earth Resources Technology Satellite (became Landsat) |
| MAC | Macao (ISO 3166 Trigram) -U.S. Military Airlift Command (1966-1992) |
| CAS | Chemical Abstracts Service - Chief Of The Air Staff - Close Air Support |
| WWF | World Wildlife Fund - World Wrestling Federation |
| TO | Togo (FIPS 10-4 Country Code) - Tonga (ISO 3166 Digram) |
| RUS | Russia (ISO 3166 Trigram) |