Compact Disk Certificate of Deposit Compact Disc Carrier Detect Committee Draft Conference on Disarmament Civil Defense Coal Division Collision Detection Concept Definition change directory Congressional District Call Deflection Circular Dichroism Counter-Drug Candela cash discount Center Director Certificates of Deposit Climatological Data coefficient of drag Color Display Communicable Disease Community Development Computer Design critical dimension cycle day Cadmium canine distemper Capacitor Diode