CDI

CDI, CDi, CD-i, or .cdi may refer to:

Government and political organizations

 * Center for Defense Information, a Washington, D.C. think tank founded in 1972
 * Center for Digital Inclusion, originally "Comitê para Democratização da Informática", a non-governmental organization in Brazil
 * Centrist Democrat International, formerly the Christian Democrat International, a political international formed in 1961
 * China Development Institute, a Shenzhen, China think tank founded in 1989
 * Comisión Nacional para el Desarrollo de los Pueblos Indígenas, Mexico's National Commission for the Development of Indigenous Peoples
 * California Department of Insurance, The State of California insurance regulation department

Schools and colleges

 * CDI College, a for-profit college in Canada
 * Collège des Ingénieurs, educational institution in France, Germany and Italy
 * Control Data Institute, an international technical vocational school created by the American Control Data Corporation

Other businesses

 * Camperdown Dairy International, an Australian infant formula company
 * CDI Corporation, an engineering services and employment agency in Philadelphia, PA
 * Cellular Dynamics International, an American research support company
 * Churchill Downs Incorporated, parent company of Churchill Downs
 * Controlled Demolition, Inc., a Phoenix, Maryland firm that specializes in controlled demolition
 * Chungdahm Institute, a company in Korea that specializes in teaching English

Economics

 * Category Development Index, measures the sales strength of a particular category of product, within a specific market
 * Contrat à durée indéterminée, French for open-ended contract, the usual form of employment contract in France
 * Child Development Index, a measure of global child poverty
 * CREST Depositary Interest, in investing, a form of depositary receipt in the UK

In chemistry, biology and medicine

 * Carbonyldiimidazole, an activating agent used for example for peptide coupling
 * Central diabetes insipidus, an endocrine disorder
 * Clinical documentation improvement, a process of improving healthcare records
 * Clostridioides difficile infection, an intestinal disease also known as Clostridium difficile infection
 * Combined drug intoxication, also known as Multiple Drug Intake (MDI)
 * Contact-dependent growth inhibition, a type of toxin delivery between bacteria which requires direct contact
 * Cyclin-dependent kinase inhibitor protein, a protein which inhibits cyclin-dependent kinase

Computing

 * Contexts and Dependency Injection, a Java standard for the inversion of control design pattern
 * CD-i, a CD-derived multimedia format, including its players made by Philips

Imaging techniques

 * Coherent diffraction imaging, a lensless nanoscale imaging technique
 * Current density imaging, an extension of magnetic resonance imaging (MRI)
 * Color doppler imaging, a type of Doppler ultrasonography

In transportation

 * Capacitor discharge ignition or thyristor ignition, a type of electronic ignition system
 * Common rail diesel injection, a modern method of fuel injection in diesel engines
 * Course deviation indicator, an aircraft navigation instrument

Other uses in science and technology

 * Capacitive deionization, a water desalination technology based on the use of electrical field effects
 * Common direct injection, a synonym of common rail; a type of fuel injection
 * Customer data integration, a discipline concerned with representation of data in enterprise systems
 * Cyrel Digital Imager, a direct laser-engraving flexography plate printing device
 * .cdi filename extension, for DiscJuggler disk images, developed by Padus
 * „$C_{D,i}$ ”, the lift-induced drag coefficient

Other uses

 * Côte d'Ivoire, a country in West Africa once known as Ivory Coast
 * Chief of Defence Intelligence, head of the UK Defence Intelligence Staff
 * Ciudad de las Ideas (conference), a conference at Puebla, Mexico
 * Custodial Detention Index, a list of U.S. residents compiled by FBI during 1939–1941, later used for Japanese-American internment
 * Chak De! India, a 2007 Bollywood sports film about field hockey in India
 * 401 in Roman numerals
 * Certified Deaf Interpreter, a certificate offered by the Registry of Interpreters for the Deaf