• Capacitor discharge ignition, an ignition system common for motorcycle engines
• Carbonyldiimidazole, a peptide coupling agent
• Cargo Disposition Instructions
• Category Development Index is a measure used in the allocation of media, and promotion for a specific product category or genre
• Category Development System
• Center for Defense Information
• Center for Domain Integration
• Comitê para Democratização da Informática (committee for democratization of computer science)
• Chief of Defense Intelligence, a military position
• Children's Depression Inventory
• Christian Democrat International
• Chronic daily intake
• Chung Dahm Institute
• Churchill Downs Incorporated
• Civilian Disabling Injury
• Coherent Diffraction Imaging, a lensless nanoscale imaging technique
• Collateral Duty Inspector, a maintenance position doing quality assurance
• Collector Diffusion Isolation, in semiconductor manufacturing
• Collège des Ingénieurs, an educational institution in France and Germany
• Color Discrimination Index, a measure relevant for appraisal of color rendering
• Color Doppler Imaging, a technique of imaging with ultrasounds
• Combined Drug Intoxication
• Comisión Nacional para el Desarrollo de los Pueblos Indígenas, Mexico's National Commission for the Development of Indigenous Peoples
• Common Direct Injection, a synonym of common rail
• MacArthur-Bates Communicative Development Inventory, a tool for gauging the vocabulary of infants and toddlers
• Compass Directional Indicator, part of aircraft navigational equipment such as AHRS, EFIS, CTOT, Vertical & Horizontal Gyro
• Conditioned Diphase, a form of diphase modulation
• Conformation Dependent Immunoassay, a proprietary immunoassay method to directly reveal and measure minute amounts of infectious prion proteins in brain tissue
• Controlled Demolition, Inc., a major Building implosion contractor
• CD-i, Compact Disc Interactive, interactive multimedia CD player and format developed and marketed by Royal Philips Electronics N.V.
• Contrat à durée indéterminée, French for open-ended contract (lit. "contract of undetermined duration"), the usual form of employment contract in France
• Course deviation indicator, an aircraft navigation instrument
• Cranial diabetes insipidus, an endocrinological disorder
• CREST Depositary Interest
• Custodial Detention Index, a list of US residents compiled by FBI during 1939-1941, and later used for Japanese American internment.
• Current density imaging, a medical imaging technique using magnetic resonance imaging (MRI)
• Customer data integration
• Cyber-enabled Discovery and Innovation, a research program at National Science Foundation
• Cyrel Digital Imager, a direct laser engraving flexography plate printing device

Further Information

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