CIR or Cir may refer to:

Locations

Cairo Regional Airport Cairo Regional Airport, is a county-owned public-use airport located northwest of the central business district of Cairo, Illinois, a city in Alexander County, Illinois, United States. It is included in the Federal Aviation Administration (FAA) ...

, FAA/IATA code, CIR * CIR, station code for the

Caledonian Road & Barnsbury railway station Caledonian Road & Barnsbury railway station in the London Borough of Islington in North London is on the North London line and is in Travelcard Zone 2. The station and all trains serving it are operated by London Overground. History The statio ...

in the UK *

Christmas Island Resort The Christmas Island Resort, often called the Christmas Island Casino, is a holiday resort on Christmas Island, an Australian territory in the north-eastern Indian Ocean lying about 300 km south of Java and 1600 km north-west of the A ...

, 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 auth ...

, 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 Emeryville, California. It was founded in 1977 as the nation’s first nonprofit investigative journalism organization, and has since grown into a multi-plat ...

, a nonprofit journalism organization *

Christian Initiative Romero __NOTOC__ The Christian Initiative Romero (CIR) is an incorporated association based in Münster, Germany. supporting labour law and human rights in Central American countries. Its core area of responsibility consists in the support of grassroots ...

, 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 Congress as part of the Revenue Act of 1862. Secti ...

, 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-PE) on April 7, 2006. Co-sponsors, who signed on the same day, were Sen. Chuck Hagel (R-NE), ...

, a US Senate bill *

Convention of Republican Institutions The Convention of Republican Institutions (french: Convention des institutions républicaines, CIR) was a socialist and republican party in France led by François Mitterrand. The CIR, founded in early June 1964, transformed from a loosely organ ...

, a defunct French political party *

Citizen initiated Referendum In political science, an initiative (also known as a popular initiative or citizens' initiative) is a means by which a petition signed by a certain number of registered voters can force a government to choose either to enact a law or hold a pu ...

, a type of

referendum A referendum (plural: referendums or less commonly referenda) is a direct vote by the electorate on a proposal, law, or political issue. This is in contrast to an issue being voted on by a representative. This may result in the adoption of ...

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

Cyber and Information Domain Service (Germany) The Cyber and Information Domain Service (german: Cyber- und Informationsraum, ; CIR) is the youngest branch of Germany's military, the Bundeswehr. The decision to form a new military branch was presented by Defense Minister Ursula von der Leyen ...

(

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

: ''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. Interactions CIR (gene) has been shown to interact with SNW1. Model organisms Model organism A model organism (often shortened to model) i ...

, 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 ea ...

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 * Co-rotating interaction region, the interface between fast and slow regions of the

solar wind The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona. This plasma mostly consists of electrons, protons and alpha particles with kinetic energy between . The composition of the ...

* 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 interferen ...

, in radio transmission *

Color infrared ''Top:'' tree photographed in the near infrared range. ''Bottom:'' same tree in the visible part of the spectrum. In infrared photography, the film or image sensor used is sensitive to infrared light. The part of the spectrum used is ...

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 exp ...

, 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 give ...

, 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 contr ...

, 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 program in the United States. ...

, a graduate program *

CIR Group CIR Group (''Compagnie Industriali Riunite'') is an Italian holding company listed on the stock exchange which is 46% controlled by COFIDE of the De Benedetti family. The company was founded in 1976, when Carlo De Benedetti acquired the company Co ...

, an Italian holding company *

Coordinator for International Relations A , or CIR, is a participant on the JET Programme residing and working in Japan. Although responsibilities for a CIR vary according to his or her contracting organization, the majority of a CIR's time is spent organizing and assisting various proj ...

, a position within the Japan Exchange and Teaching Program * Cost/income ratio, a

financial ratio A financial ratio or accounting ratio is a 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 financia ...

* 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 ...

for interest rate dynamics * ''

Campionato Italiano Rally The Campionato Italiano Rally (C.I.R.) (''Italian Rally Championship'') is the main rally championship, which takes place in Italy. , the championship consists of eight rallies,Italian Rally Championship – Race Calendar 2017'. Retrieved 20 Febr ...

'' (Italian Rally Championship), in automobile racing *

Arctic Circle Air Arctic Circle Air was an American airline based in Fairbanks, Alaska, 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 was Fairbanks ...

, ICAO code {{disambig