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/ˈɪn.dɛks/
Meaning & Definition
noun
An alphabetical list of names, subjects, etc., with references to the places where they occur, typically found at the end of a book.
The index at the back of the book helped me quickly locate the information I needed.
A numerical scale used to compare variables with one another or with some reference number.
The cost of living index showed that prices have risen significantly over the past year.
A sign that something is likely to happen or that a particular situation exists.
The unemployment rate is often seen as an important index of economic health.
verb
To provide an index for (a book, article, etc.).
The librarian will index the new arrivals to ensure they are easily accessible.
To arrange data or information in an index format.
The software allows users to index their documents for faster retrieval.
Etymology
Middle English from Latin 'index', meaning 'indicator, pointer'.
Common Phrases and Expressions
Index of refraction:
A measure of how much light bends when it enters a material.
Index finger:
The finger next to the thumb, used for pointing.
Index card:
A small card used for storing information, often used in research.
Related Words
Slang Meanings
To reference or cite something in a declarative manner.
He indexed that movie as a must-see.
To create or maintain an ordered list.
I'm indexing the photos from our trip.