index

Meanings

1. 1
   noun

   An alphabetical list at the back of a book showing where topics can be found.

   I looked up the word in the index to find the right page.

2. 2
   noun

   A number or figure that shows a level, rate, or change in something.

   The cost of living index rose again this year.

3. 3
   verb

   To make an index for a book or set of documents.

   It took weeks to index the entire encyclopedia.

From Latin index (“a discoverer, informer, spy; of things, an indicator, the forefinger, a title, superscription”), from indicō (“point out, show”); see indicate.

Topics