| Acronym | Meaning |
| C | Centi |
| CCRP | Command And Control Research Program |
| NO | Norwegian Language (ISO 639-1 Code) |
| L | Fifty (in Roman Numerals) -Label - Lap - Large - Laser (US Military Aircraft Basic Mission Designation) - Latin - Left -Litre -Low (transmissions) |
| KE | Kenya (FIPS 10-4 Country Code; ISO 3166 Digram) -Kinetic Energy - Knowledge Engineering |
| KJ | Kuanyama Language (ISO 639-1 Code) |
| CAI | Computer Assisted Instruction |
| OPCW | Organization For The Prohibition Of Chemical Weapons |
| BBC | Breeding Bird Census - British Broadcasting Corporation |
| ECT | ElectroConvulsive Therapy |