| Acronym | Meaning |
| CK | Cocos (Keeling) Islands (FIPS 10-4 Country Code) - Cook Islands (ISO 3166 Digram) |
| ACMC | (U.S.) Assistant Commandant Of The Marine Corps |
| SQUID | Superconducting QUantum Interference Device |
| OAU | Organization For African Unity |
| ITN | Independent Television News (British) |
| FIU | Florida International University |
| HSC | High School Certificate (as Used In New South Wales) |
| SN | Senegal (ISO 3166 Digram) - Singapore (FIPS 10-4 Country Code) - Snow (METAR Code) - SuperNova-Screen Name |
| DRI | Detection |
| IMT | Integrated Management Tool |