Source: Wikipedia, the free encyclopedia.

Index (pl.: indexes or indices) may refer to:

Arts, entertainment, and media

Fictional entities

  • Index (A Certain Magical Index)
    , a character in the light novel series A Certain Magical Index
  • The Index, an item on the
    Halo Array
    in the Halo video game series

Periodicals and news portals

  • Index Magazine, a publication for art and culture
  •, a Croatian online newspaper
    , a Hungarian-language news and community portal
  • The Index (Kalamazoo College)
    , a student newspaper
  • The Index, an 1860s European propaganda journal created by Henry Hotze to support the Confederate States of America
  • Truman State University Index, a student newspaper

Other arts, entertainment and media

Business enterprises and events

  • Index (retailer), a former UK catalogue retailer
    , a market research fair in Lucknow, India
  • Index Corporation
    , a Japanese video game developer


Places in the United States

Publishing and library studies

  • Bibliographic index, a regularly updated publication that lists articles, books, or other information items
  • Citation index
  • The Index, colloquial name for Germany's List of Media Harmful to Young People, published by the
    Bundesprüfstelle für jugendgefährdende Medien
  • Index card, used for recording and storing small amounts of data
  • Index Librorum Prohibitorum, a list of publications which the Catholic Church censored
  • Index on Censorship, a publishing organization that campaigns for freedom of expression, or its magazine of the same name
  • Index (publishing), an organized list of information in a publication
  • Index (typography)
    , a hand- or fist-shaped punctuation mark
  • Subject indexing, describing the content of a document by keywords
  • Thumb index, a round cut-out in the pages of a publication
  • Web indexing, Internet indexing

Science, technology, and mathematics

Computer science

  • Index, a key in an associative array
  • Index (typography)
    , a character in Unicode, its code is 132
  • Index, the dataset maintained by search engine indexing
  • Array index
    , an integer pointer into an array data structure
  • BitTorrent index
    , a list of .torrent files available for searches
  • Database index, a data structure that improves the speed of data retrieval
  • Index mapping of raw data for an array
  • Index register, a processor register used for modifying operand addresses during the run of a program
  • Indexed color, in computer imagery
  • Indexed Sequential Access Method
    (ISAM), used for indexing data for fast retrieval
  • Lookup table, a data structure used to store precomputed information
  • Site map, or site index, a list of pages of a web site accessible to crawlers or users
  • Web indexing, Internet indexing
  • Web server directory index, a default or index web page in a directory on a web server, such as index.html


Mathematics and statistics

  • Index, a number or other symbol that specifies an element of an indexed family or set
  • Index, an element of an index set
  • Index, the label of a summand in
    of a summation



  • Index, the winding number of an oriented closed curve on a surface relative to a point on that surface
  • Diversity index, a measure of distribution or variety in fields such as ecology or information science
  • Index of a vector field
    , an integer that helps to describe the behaviour of a vector field around an isolated zero

Number theory


Other uses in science and technology

  • Dental indices
    , standardized scoring systems for tooth problems
  • Indexicality, in linguistics, the phenomenon of a sign pointing to some object in the context in which it occurs
  • Indexing (motion), in mechanical engineering and machining, movement to a precisely known location
  • Refractive index, a measurement of how light propagates through a material
  • Valve Index, a virtual reality headset

Other uses

See also

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