DC85 stands for Douglas DC-8-50 (airliner; McDonnell Douglas)
DC6 stands for Douglas DC6 (airliner; McDonnell Douglas)
DC5 stands for Dave Clark Five
DC4ILO stands for Database Compare for Integrated Logistics Overhaul
DC4K stands for Divorce Care for Kids (Wake Forest, NC)
DC4 stands for Device Control Four
DC2RT stands for Deployed Combat Casualty Research Team (US DoD)
DC3 stands for Douglas DC3 (airliner) DC3 stands for Device Control Three (or XOFF) DC3 stands for Deep Convective Clouds…
DC2R stands for Digitized Command and Control Rehearsal (ABCS)
DC2IPS stands for Deployable Command and Control Information Processing System