index definition, meaning - what is index in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “index”

See all translations

index

noun uk   us   /ˈɪn.deks/ (plural indices or indexes)

index noun (LIST)

C1 [C] an alphabetical list, such as one printed at the back of a book showing which page a subject, name, etc. is on: Try looking up "heart disease" in the index. [C] a collection of information stored on a computer or on a set of cards, in alphabetical order: He still has all his friends' names and addresses on a card index.
More examples

index noun (COMPARISON)

[C] 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: Consumer spending is often a good index of public confidence in the economy.
More examples

index

verb [T] uk   us   /ˈɪn.deks/

index verb [T] (MAKE LIST)

to prepare an index for a book or collection, or arrange it in an index: Our computer indexes several thousand new records every second. The book contains a lot of information, but it's not very well indexed.

index verb [T] (COMPARE)

to change a system of numbers according to each other or a fixed standard: Living expenses will be indexed to/in line with inflation (= to take inflation into consideration).
(Definition of index from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of index?
Add Cambridge dictionaries to your browser to your website

Definitions of “index” in other dictionaries

Word of the Day

prime time

in television and radio broadcasting, the time when the largest number of people are watching or listening

Word of the Day

The language of elections

by Liz Walter,
April 22, 2015
On May 7th, citizens of the UK will be going to the polls (having an election) to decide who will form the next government. This kind of election is known as a general election. The country is divided into 650 areas, called constituencies. Each constituency elects a member of parliament (MP) to

Read More 

e-juice noun

April 27, 2015
the liquid content in an e-cigarette, which includes nicotine and may be flavoured in various ways Contestants…suck on a modified vaper until they’ve filled their chest cavity with enough vaporised nicotine “e-juice” to shoot out a belch of white smoke upwards of 4ft long.

Read More