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Index

ˈɪndɛks

Index definitions
noun
indexes indices index
  1. (in a book or set of books) an alphabetical list of names, subjects, etc. with reference to the pages on which they are mentioned

    "clear cross references supplemented by a thorough index"

    • an alphabetical list by title, author, or other category of a collection of books or documents, for example in a library
    • a set of items each of which specifies one of the records of a file and contains information about its address
  2. a sign or measure of something

    "exam results may serve as an index of the teacher's effectiveness"

    • a figure in a system or scale representing the average value of specified prices, shares, or other items as compared with some reference figure

      "the hundred-shares index closed down 9.3"

    • a number giving the magnitude of a physical property or other measured phenomenon in terms of a standard

      "the oral hygiene index was calculated as the sum of the debris and calculus indices"

  3. an exponent or other superscript or subscript number appended to a quantity
  4. a pointer on an instrument, showing a quantity, a position on a scale, etc.
    • a symbol shaped like a pointing hand, used to draw attention to a note
verb
index indexed indexes indexing
  1. record (names, subjects, etc.) in an index

    "the list indexes theses under regional headings"

    • provide an index to

      "she offered help in indexing my text book on bookselling"

  2. link the value of (prices, wages, or other payments) automatically to the value of a price index

    "the Supreme Soviet passed legislation indexing wages to prices"

  3. (of a machine or part of one) move from one predetermined position to another in order to carry out a sequence of operations

    "the pins are retracted and indexed to occupy an adjacent slotted position"