An index is a system used to make finding information easier.

Index may also refer to:

• Bibliographic index, a regularly updated print Printing is a process for reproducing text and image, typically with ink on paper using a printing press. It is often carried out as a large-scale industrial process, and is an essential part of publishing and transaction printing periodical publication A periodical publication, or just periodical, is a published work that appears in a new edition on a regular schedule. The most familiar examples are the newspaper, often published daily, or weekly; or the magazine, typically published weekly, monthly or as a quarterly. Other examples would be a newsletter, a literary journal or learned journal, that lists articles, books, and/or other information items, usually within a particular discipline An academic discipline, or field of study, is a branch of knowledge which is taught and researched at the college or university level. Disciplines are defined , and recognized by the academic journals in which research is published, and the learned societies and academic departments or faculties to which their practitioners belong.
• Index (publishing) An index is a list of words or phrases and associated pointers ('locators') to where useful material relating to that heading can be found in a document. In a traditional back-of-the-book index the headings will include names of people, places and events, and concepts selected by a person as being relevant and of interest to a possible reader of, a detailed list, usually arranged alphabetically, of the specific information in a publication
• Index cards An index card is heavy paper stock cut to a standard size. Index cards are often used for recording individual items of information that can then be easily rearranged and filed. It was invented by Carl Linnaeus. The most common size in the United States and Russia is 3 by 5 inches (76 by 127 mm), hence the common name 3-by-5 card. Other sizes in a rolodex or old library card catalog, early and mid 20th century technologies for maintaining such lists
• Index (mathematics), for various meanings of the word in mathematics
• Index (economics) In economics and finance, an index is a single number calculated from a set of prices or of quantities[citation needed]. Examples include the price index, quantity indexes , market performance indexes (such as a labour market index / job Index and stock market indexes). Values of the index in successive periods (days, years, etc.) summarize level, a single number calculated from an array of prices and quantities
  • Price index A price index is a normalized average (typically a weighted average) of prices for a given class of goods or services in a given region, during a given interval of time. It is a statistic designed to help to compare how these prices, taken as a whole, differ between time periods or geographical locations, a typical price for some good or service
  • Operating Index, a tool to compare the operating performance of a company with its peer universe
• Index, Washington Index is a town in Snohomish County, Washington, United States. The population was 157 at the 2000 census, a town in Snohomish County, Washington, United States
• Index, New York, a hamlet in the County and Town of Otsego, New York, United States
• Index (typography) The symbol ☞ is a punctuation mark, called an index, manicule or fist. Though rare today, this symbol was in common use between the 12th and 18th centuries in the margins of books, and was formerly included in lists of standard punctuation marks. Its typical use is as a bullet-like symbol to direct the reader’s attention to important text,, a largely obsolete punctuation mark
• Indexing (motion) Indexing in reference to motion is moving into a new position or location quickly and easily but also precisely. After a machine part has been indexed, its location is known to within a few hundredths of a millimeter (thousandths of an inch), or often even to within a few thousandths of a millimeter (ten-thousandths of an inch), despite the fact, a kind of motion in many areas of mechanical engineering and machining

Publications:

• Index Librorum Prohibitorum The Index Librorum Prohibitorum was a list of publications prohibited by the Roman Catholic Church. It was abolished on 14 June 1966 by Pope Paul VI, a list of publications which the Catholic Church censored
• Germany's List of Media Harmful to Young People, colloquially known as The Index, published by the Bundesprüfstelle für jugendgefährdende Medien The Bundesprüfstelle für jugendgefährdende Medien or BPjM is an upper-level German federal agency subordinate to the Federal Ministry for Family Affairs, Senior Citizens, Women and Youth. It is responsible for examining media works allegedly harmful to young people and entering these onto an official list - a process known as Indizierung (
• Index Magazine Index Magazine was a prominent New York City based publication for art and culture. It was created by Peter Halley and Bob Nickas in 1996. The publication featured a mix of interviews with famous arty folks like Björk with not so-famous New York personalities like Queen Itchie or Ducky Doolittle, was a prominent New York City based publication for art and culture
• Truman State University Index The Truman State University Index is a weekly student newspaper distributed at Truman State University and throughout the Kirksville, Missouri community. The publication is entirely student-run and funded mostly through its own advertising revenue. It has published continuously since 1909, and its current circulation is about 4,500, the weekly student newspaper
• The Index, the student newspaper of Kalamazoo College Kalamazoo College, also known as K College or simply K, is a private liberal arts college located in Kalamazoo, Michigan, United States. Founded in 1833, the institution was American Baptist in origin, and acknowledges its historical relationship with that denomination, but today maintains no religious affiliation. In addition to being one of the, published since 1877
• The Index (journal), a European propaganda journal created by Henry Hotze to support the Confederate States of America during the American Civil War
• index.hu, a prominent news and community portal in Hungarian
• Toaru Majutsu no Index, a Japanese light novel, manga, and anime series

In computers and information retrieval:

• Index (database) A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random look ups and efficient access of ordered records. The disk space, a feature in a computerized database which allows quick access to the rows in a table
• Index (information technology) When data objects are stored in an array, individual objects are selected by an index which is usually a non-negative scalar integer. Indices are also called subscripts, either an integer which identifies an array element, or a data structure which enables fast lookup
• Index (search engine) Search engine indexing collects, parses, and stores data to facilitate fast and accurate information retrieval. Index design incorporates interdisciplinary concepts from linguistics, cognitive psychology, mathematics, informatics, physics and computer science. An alternate name for the process in the context of search engines designed to find web, for supporting information retrieval in search engines
• Webserver directory index When an HTTP client requests a URL that points to a directory structure instead of an actual Web page within the directory, the Web server will generally serve a general page, which is often referred to as a main or "index" page, a default or index web page in a directory on a web server, such as index.html
• Subject indexing Subject indexing is the act of describing a document by index terms to indicate what the document is about or to summarize its content. Indexes are constructed, separately, on three distinct levels: terms in a document such as a book; objects in a collection such as a library; and documents within a field of knowledge, describing the content of a document by keywords
• BitTorrent index A BitTorrent index is a list of .torrent files , managed by a website, that is available for searching files to download through BitTorrent protocol. It should be differentiated from a BitTorrent tracker, which merely coordinates communication between peers attempting to download the payload of the torrents. Many BitTorrent websites act as both, a list of .torrent files available for searches
• Indexed color In computing, indexed color is a technique to manage digital images' colors in a limited fashion, in order to save computer's memory and file storage, while speeding up display refresh and telecom transfers. When an image is encoded this way, the color information is not directly carried by the image pixel data, but it is stored into a separate

Other:

• The Index, an item on the Halo (megastructure) Halos are fictional megastructures and superweapons in the Halo video game series. They are referred to as "Installations" by their AI monitors, and are collectively referred to as "the Array" by the installations' creators, the Forerunners. The series' alien antagonists, The Covenant, refer to the structures as the 'Sacred in the Halo series of video games
• The Index (Dubai) The Index is a mixed-use skyscraper designed by Foster and Partners currently under construction in Dubai, United Arab Emirates. The supertall will be 328 meters (1,076 feet) tall and have 80 floors. Of those 80 floors, the lower 25 will be offices and 47 will be for residential use, including the world's highest apartment for a time when, a tower under construction in Dubai
• Index (retailer), a defunct UK catalogue retailer formerly owned by the Littlewoods group and known as Littlewoods Index
• Index finger The index finger, , is the first finger and the second digit of a human hand, the second digit of a human hand
• Index fund An index fund or index tracker is a collective investment scheme that aims to replicate the movements of an index of a specific financial market, or a set of rules of ownership that are held constant, regardless of market conditions, a collective investment scheme
• Indexicality In linguistics and in philosophy of language, an indexical behavior or utterance points to some state of affairs. For example, I refers to whoever is speaking; now refers to the time at which that word is uttered; and here refers to the place of utterance. For Charles Sanders Peirce, "indexicality" is one of three sign modalities (see, in linguistics, the variation of meaning of an utterance according to certain features of the context in which it is uttered
• Indexed (cartoon), a web cartoon by Jessica Hagy
• In mathematics, an exponent Exponentiation is a mathematical operation, written as an, involving two numbers, the base a and the exponent n. When n is a positive integer, exponentiation corresponds to repeated multiplication; in other words, a product of n factors of a:. (Used in Australian schooling.)
• Index: a Denmark nonprofit organization which promotes Design for Life

See Also:

• Business: Business Services: Communications: Writing and Editing: Editing and Proofreading: Indexing: Directory
• Business: Business Services: Communications: Writing and Editing: Editing and Proofreading: Indexing: Associations: Directory

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