MCI may refer to:

Organization

Companies

MCI Communications MCI Communications Corp. (originally Microwave Communications, Inc.) was a telecommunications company headquartered in Washington, D.C. that was at one point the second-largest long-distance provider in the United States. MCI was instrumen ...

, originally Microwave Communications Inc., the corporation that operated as MCI from 1963 to 1998 *

MCI Inc. MCI, Inc. (subsequently Worldcom and MCI WorldCom) was a telecommunications company. For a time, it was the second largest long-distance telephone company in the United States, after AT&T. Worldcom grew largely by acquiring other telecommunic ...

, formerly called WorldCom, which acquired MCI Communications, and was later acquired by Verizon Communications *

MCI Group MCI Group, based in Geneva, Switzerland, is the world's largest professional conference organiser employing 1,800 people in 31 countries as of April 2016. The company also operates as an association management company, or AMC. MCI operates marke ...

, a global event, association management and congress management company * Mobile Telecommunication Company of Iran, the largest mobile phone operator in Iran *

Motor Coach Industries Motor Coach Industries (MCI) is a North American multinational bus manufacturer, specializing in production of motorcoaches. Best known for coaches produced for intercity transit and commuter buses, MCI produces coaches for a variety of appli ...

, a coach/bus manufacturing company *

Music Center Incorporated Music Center Incorporated (MCI) is the former name of a United States manufacturer of professional audio equipment that operated from 1955 until 1982 when it was acquired by the Sony Corporation. The company is credited with a number of world fi ...

, later known as Music Consultants Incorporated, a company that manufactured multi-track audiotape recorders and mixing consoles for professional studio recording * Music Collection International, the music division of

Video Collection International 2 Entertain (stylized as 2 , entertain) is a British video and music publisher founded in September 2004 by the merger of BBC Video and Video Collection International in 2004. Under CEO Richard Green, the company operated as a joint venture b ...

* MCI,

Frank Farian Frank Farian (born Franz Reuther; 18 July 1941) is a German record producer, musician, singer and songwriter, who founded the 1970s disco-pop group Boney M., the Latin pop band No Mercy and the pop band Milli Vanilli. He frequently created voc ...

's record label

Education

* Maine Central Institute, a boarding school in Maine, US *

Marine Corps Institute The Marine Corps Institute, commonly referred to as MCI, developed and maintained a curriculum of Marine Corps education. Subjects included infantry strategy/tactics, leadership skills, MOS qualifications, personal finance, and mathematics. Compl ...

, a coursework of Marine Corps education and training programs *

Martingrove Collegiate Institute Martingrove Collegiate Institute (MCI), also referred to as Martingrove, is a semestered public secondary school in Etobicoke, Toronto, Ontario, Canada. It opened in 1966 and is currently overseen by the Toronto District School Board. Academics ...

, a secondary school located in Toronto, Ontario, Canada *

MCI Management Center Innsbruck MCI Management Center Innsbruck is a privately organized business school in Innsbruck, Austria offering study programs leading to Bachelor and Master degrees as well as Executive Master programs (MBA, MSc, LL.M.), Executive Certificate programs ...

, a privately organized business school in Innsbruck, Austria *

Mennonite Collegiate Institute Mennonite Collegiate Institute (MCI) is a private high school located in Gretna, Manitoba. It has approximately 60 students from grade 9 to 12, teaching the curriculum requirements of Manitoba Education within a Christian/Anabaptist setting. Its ...

, a private, religious school in the town of Gretna, in Southern Manitoba * Middlefield Collegiate Institute, a secondary school located in Markham, Ontario, Canada *

Museum Conservation Institute The Smithsonian's Museum Conservation Institute (MCI) aims to be the center for specialized conservation and technical collection research Research is " creative and systematic work undertaken to increase the stock of knowledge". It ...

, of the Smithsonian Institution

Other organisations

Medical Council of India The Medical Council of India (MCI) was a statutory body for establishing uniform and high standards of medical education in India until its dissolution on 25 September 2020 when it was replaced by National Medical Commission. The Council grante ...

, a statutory body regulating medical education in India *

Ministry of Communications and Information The Ministry of Communications and Information (MCI; ms, Kementerian Perhubungan dan Penerangan; zh, 通讯及新闻部; ta, தொடர்பு, தகவல் அமைச்சு) is a ministry of the Government of Singapore respo ...

, a ministry of the Government of Singapore *

Motek Cultural Initiative Motek Cultural Initiative was established in 2011 in Toronto, Ontario, Canada in order to showcase Israeli music. Its programs include annual galas, concerts, music festivals, workshops, lectures, advocacy events, and Q&A sessions. Motek is Hebr ...

, a Toronto-based nonprofit organization promoting Israeli music and culture

Science and technology

* Millicurie (mCi), 1/1000 of a curie, a non-SI unit of radioactivity * Megacurie (MCi), 1,000,000 times a curie, a non-SI unit of radioactivity *

Macroinvertebrate Community Index Macroinvertebrate Community Index (MCI) is an index used in New Zealand to measure the water quality of fresh water streams. The presence or lack of macroinvertebrates such as insects, worms and snails in a river or stream can give a biological ...

, an index where the presence or lack of macroinvertebrates is used for monitoring stream health in New Zealand * Magnetic current imaging, using a scanning SQUID microscope *

Malicious caller identification Malicious caller identification, introduced in 1992 as Call Trace, is activated by Vertical service code Star codes *57, and is an upcharge fee subscription service offered by telephone company providers which, when dialed immediately after a ma ...

, a type of enhanced telephone service *

Mass-casualty incident A mass casualty incident (often shortened to MCI) describes an incident in which emergency medical services resources, such as personnel and equipment, are overwhelmed by the number and severity of casualties. For example, an incident where a ...

, a medical emergency involving more patients than can be easily handled by the crews initially assigned to the incident *

Media Control Interface The Media Control Interface — MCI for short — is a high-level API developed by Microsoft and IBM for controlling multimedia peripherals connected to a Microsoft Windows or OS/2 computer, such as CD-ROM players and audio controllers. MCI makes ...

, an API for controlling multimedia peripherals connected to a Microsoft Windows or OS/2 computer *

Meta-circular evaluator In computing, a meta-circular evaluator (MCE) or meta-circular interpreter (MCI) is an interpreter which defines each feature of the interpreted language using a similar facility of the interpreter's host language. For example, interpreting a lambd ...

, in computing *

Mild cognitive impairment Mild cognitive impairment (MCI) is a neurocognitive disorder which involves cognitive impairments beyond those expected based on an individual's age and education but which are not significant enough to interfere with instrumental activities o ...

, a neurological affliction often associated with Alzheimer's disease * Modulation contrast imaging, a term related to

optical transfer function The optical transfer function (OTF) of an optical system such as a camera, microscope, human eye, or projector specifies how different spatial frequencies are captured or transmitted. It is used by optical engineers to describe how the optics pro ...

Other uses

1101 Year 1101 ( MCI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. It was the 2nd year of the 1100s decade, and the 1st year of the 12th century. Events By place Byzantine Empire * ...

in Roman numerals * Kansas City International Airport (IATA airport code), Kansas City, Missouri, US *

Meal, Combat, Individual ration The Meal, Combat, Individual (MCI) was the name of canned wet combat rations issued by the United States Armed Forces from 1958 to 1980, when it was replaced by the Meal, Ready-to-Eat (MRE).Meyer, A.I. and Klicka, M.V., Operational Rations, Curren ...

, the successor to the US Army C-ration *

Michigan City station Michigan City station was a train station in Michigan City, Indiana served by Amtrak, the national railroad passenger system. It was served by two eastbound and one westbound ''Wolverine'' train at the time of closure; other ''Wolverine'' and tr ...

(Amtrak station code), Indiana, US *

Miss Chinese International Pageant Miss Chinese International Pageant (, formerly 國際華裔小姐競選), or MCI () for short, is an annual international beauty pageant, organized and broadcast by TVB, a network television station in Hong Kong. It was established in 1988 and t ...

, an annual pageant for international women of Chinese descent * Monetary conditions index, a macroeconomic index number relevant for monetary policy * Short name for

Manchester City F.C. Manchester City Football Club are an English football club based in Manchester that competes in the Premier League, the top flight of English football. Founded in 1880 as St. Mark's (West Gorton), they became Ardwick Association Football ...

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