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:
› [ C ] a collection of information stored on a computer or on a set of cards, in alphabetical order:
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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
› [ 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
- Good economic indicators caused the share index to gain (by) ten points.
- The index only includes companies that are based in the UK.
- The index measures the rise and fall of stock prices on the Hong Kong stock market.
- Traders can use stock index futures to limit the risk associated with changes in prices.
- The heat index is a measure of how hot the air feels.
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index verb [ T ] (MAKE LIST)
› to prepare an index for a book or collection, or arrange it in an index:
The book contains a lot of information, but it's not very well indexed.
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