CIR or Cir may refer to:

Locations

* Cairo Regional Airport, FAA/IATA code, CIR * CIR, station code for the

Caledonian Road & Barnsbury railway station Caledonian Road & Barnsbury is a station on the Mildmay line of the London Overground, located in the London Borough of Islington in north London. The station is situated in Travelcard Zone 2. There is an official out-of-station interchange wit ...

in the UK * Christmas Island Resort, a casino/resort in the northeastern Indian Oceans

Organizations

Center for Individual Rights The Center for Individual Rights (CIR) is a non-profit public interest law firm in the United States. Based in Washington, D.C., the firm is "dedicated to the defense of individual liberties against the increasingly aggressive and unchecked autho ...

, a US non-profit public interest law firm *

Center for Investigative Reporting The Center for Investigative Reporting (CIR) is a nonprofit news organization based in San Francisco, California. CIR was founded in 1977 as the nation’s first nonprofit investigative journalism organization. It subsequently grew into a multi ...

, a nonprofit journalism organization * Christian Initiative Romero, a German non-profit organization supporting industrial law and human rights in Central America *

Cosmetic Ingredient Review The Cosmetic Ingredient Review (CIR), based in Washington, D.C., assesses and reviews the safety of ingredients in cosmetics and publishes the results in peer-reviewed scientific literature. The company was established in 1976 by the Personal Care ...

, a consumer safety group

Politics and government

Commissioner of Internal Revenue The Commissioner of Internal Revenue is the head of the Internal Revenue Service (IRS), an agency within the United States Department of the Treasury. The office of Commissioner was created by United States Congress, Congress as part of the Reven ...

, a US Treasury position * Committee on International Relations, renamed the

United States House Committee on Foreign Affairs The United States House Committee on Foreign Affairs, also known as the House Foreign Affairs Committee, is a standing committee of the U.S. House of Representatives with jurisdiction over bills and investigations concerning the foreign affair ...

in 2007 *

Comprehensive Immigration Reform Act of 2006 The Comprehensive Immigration Reform Act (CIRA, ) was a United States Senate bill introduced in the 109th Congress (2005–2006) by Sen. Arlen Specter (R-PA) on April 7, 2006. Co-sponsors, who signed on the same day, were Sen. Chuck Hagel (R- ...

, a US Senate bill *

Convention of Republican Institutions The Convention of Republican Institutions (, CIR) was a socialist, republican and anti-Gaullist party in France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions ...

, a defunct French political party *

Citizen initiated Referendum A popular initiative (also citizens' initiative) is a form of direct democracy by which a petition meeting certain hurdles can force a legal procedure on a proposition. In direct initiative, the proposition is put directly to a plebiscite o ...

, a type of

referendum A referendum, plebiscite, or ballot measure is a Direct democracy, direct vote by the Constituency, electorate (rather than their Representative democracy, representatives) on a proposal, law, or political issue. A referendum may be either bin ...

initiated by the signature of a certain minimum number of registered voters *

Cyber and Information Domain Service (Germany) The Cyber and Information Domain Service (CIDS; (lit. ''Cyber and Information space)'', ; CIR) is the youngest branch of the German Armed Forces, the Bundeswehr. The decision to form an organizational unit was presented by Defense Minister ...

(

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

: ''Cyber- und Informationsraum''; CIR), the cyber branch of Germany's military

Science and medicine

CIR (gene) Corepressor interacting with RBPJ 1 is a protein that in humans is encoded by the ''CIR1'' gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in D ...

, a gene that encodes the protein corepressor interacting with RBPJ in humans * Carbon isotope ratio analysis, a subset of

isotope ratio mass spectrometry Isotope-ratio mass spectrometry (IRMS) is a specialization of mass spectrometry, in which mass spectrometric methods are used to measure the relative abundance of isotopes in a given sample. This technique has two different applications in the e ...

Central ischaemic response Syncope , commonly known as fainting or passing out, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. It is caused by a decrease in blood flow to the brain, typically from ...

, a cause of fainting *

Corotating interaction region A corotating interaction region (CIR) is a recurring plasma structure in the heliosphere formed when fast solar wind streams interact with slower solar wind ahead of them. This interaction creates a compressed region that appears to rotate with the ...

, the interface between fast and slow regions of the

solar wind The solar wind is a stream of charged particles released from the Sun's outermost atmospheric layer, the Stellar corona, corona. This Plasma (physics), plasma mostly consists of electrons, protons and alpha particles with kinetic energy betwee ...

* Cir, abbreviation for the constellation

Circinus Circinus is a small, faint constellation in the southern sky, first defined in 1756 by the French astronomer Nicolas-Louis de Lacaille. Its name is Latin for compass, referring to the drafting tool used for drawing circles (it should not be con ...

Technology

Carrier-to-interference ratio The signal-to-interference ratio (SIR or ''S/I''), also known as the carrier-to-interference ratio (CIR or ''C/I''), is the quotient between the average received modulated carrier power ''S'' or ''C'' and the average received co-channel interferenc ...

, in radio transmission * Color infrared film, in photography *

Combustion Integrated Rack The Combustion Integrated Rack (CIR) is an experiment facility installed in the International Space Station (ISS). It includes an optics bench, combustion chamber, fuel and oxidizer control, and five different cameras for performing combustion ex ...

, an International Space Station microgravity research tool *

Committed information rate In a Frame Relay network, committed information rate (CIR) is the bandwidth for a virtual circuit guaranteed by an internet service provider to work under normal conditions. Committed data rate (CDR) is the payload portion of the CIR. At any giv ...

, or minimum guaranteed bitrate, in telecommunications *

Consumer IR Consumer IR, consumer infrared, or CIR is a class of devices employing the infrared portion of the electromagnetic spectrum for wireless communications. CIR ports are commonly found in consumer electronics devices such as television remote cont ...

, a class of remote control and communication devices

Other uses

Committee on International Relations (University of Chicago) The Committee on International Relations (CIR) is a one-year master's degree graduate program in the Division of Social Sciences at the University of Chicago. It is one of the oldest international relations graduate programs in the United State ...

, a graduate program *

CIR Group CIR Group (''Compagnie Industriali Riunite'') is an Italian holding company that is active in media, automotive components, and the healthcare sectors. It is listed on the Italian Stock Exchange and is 46% controlled by COFIDE of the De Benedetti ...

, an Italian holding company * Coordinator for International Relations, a position within the Japan Exchange and Teaching Program * Cost/income ratio, a

financial ratio A financial ratio or accounting ratio states the relative magnitude of two selected numerical values taken from an enterprise's financial statements. Often used in accounting, there are many standard ratios used to try to evaluate the overall fin ...

* The

Cox–Ingersoll–Ross model In mathematical finance, the Cox–Ingersoll–Ross (CIR) model describes the evolution of interest rates. It is a type of "one factor model" (short-rate model) as it describes interest rate movements as driven by only one source of market risk. T ...

for interest rate dynamics * '' Campionato Italiano Rally'' (Italian Rally Championship), in automobile racing *

Arctic Circle Air Arctic Circle Air was an American airline based in Fairbanks, Alaska, United States, USA. It operated scheduled commuter services and charter flights to over 16 Alaskan communities. It was established and started operations in 1973. Its main base ...

, ICAO code {{disambig