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  1. Dictionary
    index
    /ˈɪndɛks/

    noun

    • 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"
    • 2. a sign or measure of something: "exam results may serve as an index of the teacher's effectiveness" Similar guidecluehintindication

    verb

    • 1. record (names, subjects, etc.) in an index: "the list indexes theses under regional headings"
    • 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"

    More definitions, origin and scrabble points

  2. a system of numbers used for comparing values of things that change according to each other or a fixed standard: the FTSE 100 Index. the Dow Jones Index. a wage / price index. [ C usually singular ] something that shows how strong or common a condition or feeling is:

  3. The meaning of INDEX is a list (as of bibliographical information or citations to a body of literature) arranged usually in alphabetical order of some specified datum (such as author, subject, or keyword). How to use index in a sentence.

  4. An index is a system by which changes in the value of something and the rate at which it changes can be recorded, measured, or interpreted. ...the U.K. retail price index. ...economic indices. 2. countable noun. An index is an alphabetical list that is printed at the back of a book and tells you on which pages important topics are referred to.

  5. something used or serving to point out; a sign, token, or indication: a true index of his character. something that directs attention to some fact, condition, etc.; a guiding principle. a pointer or indicator in a scientific instrument. a piece of wood, metal, or the like, serving as a pointer or indicator. Digital Technology.

  6. Definition of index noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  7. an alphabetical list of subjects or names at the end of a book, showing on what page they are found in the text: Look up ' heart disease ' in the index. index noun [C] (INFORMATION) a collection of information stored on a computer or on cards in alphabetical order. index noun [C] (SYSTEM)

  8. index - a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time

  9. Index definition: Something that serves to guide, point out, or otherwise facilitate reference, especially:. Dictionary Thesaurus

  10. index meaning, definition, what is index: an alphabetical list of names, subjects ...: Learn more.

  11. something used or serving to point out; a sign, token, or indication: a true index of his character. something that directs attention to some fact, condition, etc.; a guiding principle. a pointer or indicator in a scientific instrument. a piece of wood, metal, or the like, serving as a pointer or indicator. Computing.