Also found in: Dictionary, Medical, Encyclopedia, Wikipedia.
C3Colorectal Cancer Coalition (Alexandria, Virginia)
C3command, control, and communications (US DoD)
C3Composition 3 (explosive)
C3Consultation, Command and Control (NATO)
C3Capability 3
C3Communicatie Centrum Chemie (Dutch: Chemistry Communication Center; Netherlands)
C3Clarity 3 (Everquest game)
C3Cambridge Community Church
C3Consultation, Command & Control
C3Community Centred Conservation (UK)
C3Schedule III Controlled Substance (USA)
C3Career Captains Course (US Army)
C3Ceramic Cased Capacitor
C3CPU State 3 (normal sleep mode, computing)