| Acronym | Meaning |
| LIGO | Laser Interferometer Gravitational Wave Observatory |
| PDQ | Pre-Defined Queries (Siebel Packages) - Pretty Damn Quick |
| KET | Kentucky Educational Television Refers To The Network And The Production Facilities -Key English Test |
| YN | Yottanewton |
| CID | Combat Identification -Criminal Investigation Division - Criminal Investigations Department |
| DFAS | (U.S.) Defense Finance And Accounting Service |
| DK | Denmark (ISO 3166 Digram) |
| VDR | North Vietnam (ISO 3166 Trigram |
| PG | Petagram |
| MAD | Magnetic Anomaly Detector -Moroccan Dirham (ISO 4217 Currency Code) -Mutual Assured Destruction |