Ic

IC, ic, or i.c. may stand for:

Computing and technology

• Integrated circuit
• Interactive C, a programming language for robotic controllers
• Interchangeable core, a type of lock cylinder
• Isolation condenser, a passive cooling system for boiling water nuclear reactors
• I_C, the collector current in formula representing Bipolar junction transistors

Education

• Illinois College, Jacksonville, Illinois, USA
• Imperial College London, UK
• International College, Beirut, Lebanon

Finance and economics

• Information coefficient
• Indifference curve
• Internal control

Language

• -ic suffix
• īc, an old English pronoun
• IC codes, police shorthand expressions for apparent ethnicity
• i.c., shorthand for in casu, Latin for 'in this case'
• Index of coincidence
• -ić or -ič, a family name suffix in South Slavic languages

Medicine

• Inferior colliculus, a part of the midbrain
• Inspiratory capacity, a measure of lung volumes
• Intensive care medicine
• Intermittent catheterisation, a method of relieving the bladder.
• Interstitial cystitis, a disease
• Informed consent, in clinical trials the form that has to be signed by the patient (subject) before entering the study

Science

• Index Catalogue, a nebula and other object catalogue used in astronomy
• Ion Chromatography
• Ionization chamber
• Type Ic supernova, a subtype of Type I supernova
• Ice I_c, a metastable cubic crystalline variant of ice
• Inhibitory Concentration, as in half maximal inhibitory concentration (IC50)

Organizations and companies

• IC Bus, a bus manufacturer
• Industry Canada, division of the Canadian government
• United States Intelligence Community
• InterContinental hotel chain, or its parent company InterContinental Hotels Group

Places

• Canary Islands, (ISO 3166-1 code: IC)
• Information Commons, Sheffield, 24hr Library at Sheffield University, United Kingdom

Religion

• IC, postnominal letters for a member of the Rosminians, officially the Institute of Charity
• a Christogram
• Irreducible complexity

Transport

• Illinois Central Railroad, reporting mark IC
• Indian Airlines, former airline IATA airline designator
• InterCity certain long-distance passenger train services in Europe

Other uses

• Identity card
• Impuls IC, a German hang glider design
• Incident commander
• International Canoe, a powerful and extremely fast single handed sailing canoe