Definition of Index
Index
in·dex
Definition/Meaning
(noun)
an alphabetical list, typically at the end of a book, containing names or topics and information on where they can be found in the book;
e.g. She checked the index of the textbook to quickly find the section she was looking for.
(noun)
an alphabetical list of books and other documents/literature that are cited in a written work or stocked in a library, typically arranged by author or subject;
e.g. I read through the index of the library's collection to see if they had the book I wanted.
(noun)
broadly, something that serves to measure or evaluate something or indicate some outcome;
e.g. The number of people at a restaurant can be an index of how good the food is.
(noun)
broadly, a number that serves to measure a property or phenomenon and give it a physical quantity that can be compared to a standard;
e.g. We have designed an index which we can use to analyze the results of our experiments.
(verb)
broadly, to create a record of people, things, or subjects, typically arranged alphabetically, or to provide a document with such a record;
e.g. She started to index the publications she had cited in her paper.
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