| Acronym | Meaning |
| DC | Da Capo - Italian Democrazia Cristiana - Digital Compass - Direct Current -District Of Columbia (postal Symbol) -Douglas Aircraft Company - Dublin Core - Duty Cycle |
| I | Iodine - One (in Roman Numerals) |
| ACK | Acknowledge (telecommunications; Cf. NAK) |
| TT | Tatar Language (ISO 639-1 Code) |
| ARRC | ACE Rapid Reaction Corps |
| GIG | Global Information Grid |
| RTI | Run-Time Infrastructure (Simulation) |
| ACDC | Alternating Current Direct Current |
| FLQ | Front De Lib?ration Du Qu?bec (French For Qu?bec Liberation Front) |
| AMTE | UK Admiralty Marine Technology Establishment (1977?1984) |