| Acronym | Meaning |
| CAEN | Close Action Engagement (constructive Simulation) |
| UK | United Kingdom (alsoFIPS 10-4 Country Code) - University Of Kentucky |
| RS | Russia (FIPS 10-4 Country Code) |
| PBS | Public Broadcasting Service |
| NCAR | U.S. National Center For Atmospheric Research |
| ZW | Zeptowatt |
| ARTCC | Air Route Traffic Control Center |
| C | Carbon - Coulomb - One Hundred (in Roman Numerals) |
| ARDA | Advanced Research And Development Activity (became DTO 2006) |
| FBIDST | Fellow Of The British Institute Of Dental And Surgical Technologists |