| Acronym | Meaning |
| C4 OR C? | Command |
| COR | Cornish Language (ISO 639-2 Code) |
| AA | Achieved Availability - Alcoholics Anonymous -Armed Forces Americas (postal Symbol) - Aruba (FIPS 10-4 Territory Code) -Assembly Area - Automobile Association- Avenue Of Approach |
| AVGP | Armoured Vehicle |
| BLEVE | Boiling Liquid Expanding Vapour Explosion (blevy) |
| CMOS | Canadian Meteorological And Oceanographic Society - Complementary Metal-Oxide-Semiconductor |
| PWR | Pressurized Water Reactor |
| HPV | Human Papilloma Virus |
| FMRI | Functional Magnetic Resonance Imaging |
| CC | Many |