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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"
   • ▪ an alphabetical list by title, author, or other category of a collection of books or documents, for example in a library. Similar registerlistlistinginventorydirectoryguidekeycataloguetable of contents
   • ▪ short for Index Librorum Prohibitorum
   • ▪ 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" Similar guidecluehintindicationindicatorleadsignsignalmarktokenevidencesymptomimplicationintimationsuggestion
   • ▪ 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. Similar pointerindicatorneedlehandfingermarker
   • ▪ a symbol shaped like a pointing hand, used to draw attention to a note.

   verb

   • 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"

   Word Origin late Middle English: from Latin index, indic- ‘forefinger, informer, sign’, from in- ‘towards’ + a second element related to dicere ‘say’ or dicare ‘make known’; compare with indicate. The original sense ‘index finger’ (with which one points), came to mean ‘pointer’ (late 16th century), and figuratively something that serves to point to a fact or conclusion; hence a list of topics in a book (‘pointing’ to their location).

   Derivatives

   • 1. indexable adjective
   • 2. indexation noun
   • 3. indexer noun
   • 4. indexible adjective

   Scrabble Points: 13

   • I

     1

   • N

     1

   • D

     2

   • E

     1

   • X

     8

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   More definitions, origin and scrabble points

2. People also ask

   What is an index in a book?

   • 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. There's even a special subject index. If you index a book or a collection of information, you make an alphabetical list of the items in it. Painters and sculptors are indexed separately. [VERB-ed]

   INDEX definition and meaning | Collins English Dictionary

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   What does index mean?

   • INDEX definition: 1. an alphabetical list, such as one printed at the back of a book showing which page a subject…. Learn more.

   INDEX | English meaning - Cambridge Dictionary

   dictionary.cambridge.org/dictionary/english/index

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   What does index mean in a sentence?

   • Get Word of the Day daily email! 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.

   Index Definition & Meaning - Merriam-Webster

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   What is the plural of indices?

   • Word forms: indices , indexes , indexing , indexed language note: The usual plural is indexes, but the form indices can be used for meaning [sense 1]. 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.

   INDEX definition and meaning | Collins English Dictionary

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3. dictionary.cambridge.org › dictionary › englishINDEX | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   Learn the meaning of index as a noun and a verb in English, with different contexts and usage. Find out how to use index in lists, comparisons, finance, and business.

4. www.merriam-webster.com › dictionary › indexIndex Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › index

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   Learn the various meanings and uses of the word index, from a list of items or numbers to a device or symbol. See synonyms, examples, word history, and related phrases of index.

5. Videos

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6. www.collinsdictionary.com › dictionary › englishINDEX definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   Learn the various meanings and uses of the word index, from an alphabetical list in a book to a mathematical exponent. See synonyms, examples, and related terms for index.

7. www.dictionary.com › browse › indexINDEX Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › index

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   Index is a noun that can mean a list of names, topics, or numbers in a book, a sign or indicator, a mathematical expression, or a pointer. It can also be a verb that means to provide with an index, to enter in an index, or to rotate a machine.

8. www.oxfordlearnersdictionaries.com › definitionindex noun - Definition, pictures, pronunciation and usage ...

   www.oxfordlearnersdictionaries.com › definition

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   Learn the meaning and usage of the word index in different contexts, such as books, money, computers and mathematics. Find out how to pronounce index and see pictures and collocations.

9. www.thefreedictionary.com › indexIndex - definition of index by The Free Dictionary

   www.thefreedictionary.com › index

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   Index is a word with multiple meanings and uses in different fields, such as printing, mathematics, statistics, and computing. Learn the definition, synonyms, and examples of index from various sources and dictionaries.

10. dictionary.cambridge.org › learner-english › indexINDEX | meaning - Cambridge Learner's Dictionary

    dictionary.cambridge.org › learner-english › index

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    Index is a noun that can mean a list of subjects or names in a book, a collection of information in alphabetical order, or a system for comparing values. Learn more about the different meanings and uses of index with examples and translations.