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Meaning of “index” - Learner’s Dictionary

index

noun [C]     /ˈɪndeks/
LIST ( plural indexes)
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.Books and parts of booksLists and cataloguesSchedules and agendas
INFORMATION ( plural indexes)
a collection of information stored on a computer or on cards in alphabetical orderComputer concepts
SYSTEM ( plural indices, indexes)
a system for comparing different values and recording changes, especially in financial markets: the retail price indexNumerical relationships
(Definition of index noun from the Cambridge Learner’s Dictionary © Cambridge University Press)
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