Meaning & Definition of word "Index"

Index

/ˈɪn.dɛks/

1. An alphabetical list of names, subjects, etc., with references to the places where they occur, typically found at the end of a book.
- Example: The index at the back of the book helped me quickly locate the information I needed.
2. A numerical scale used to compare variables with one another or with some reference number.
- Example: The cost of living index showed that prices have risen significantly over the past year.
3. A sign that something is likely to happen or that a particular situation exists.
- Example: The unemployment rate is often seen as an important index of economic health.

1. To provide an index for (a book, article, etc.).
- Example: The librarian will index the new arrivals to ensure they are easily accessible.
2. To arrange data or information in an index format.
- Example: The software allows users to index their documents for faster retrieval.

Middle English from Latin 'index', meaning 'indicator, pointer'.

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.

indicator:

A device or variable that provides information about a condition or process.

catalog:

A complete list of items, typically in alphabetical order.

database:

A structured set of data held in a computer.

Meaning: To reference or cite something in a declarative manner.

Example Sentence: He indexed that movie as a must-see.

Meaning: To create or maintain an ordered list.

Example Sentence: I'm indexing the photos from our trip.