indices
indices — noun
1. the plural form of the noun index — used when referring to more than one index i
the plural form of the noun index — used when referring to more than one index in contexts such as book references, financial market listings, or mathematical notation.
Trang checked the indices at the back of the book for the authors she cited.
plural form: indices = more than one index
The Nikkei 225 and the S&P 500 are major stock market indices that investors watch closely.
collocation: stock market indices
The database administrator rebuilt the indices to make the search queries run faster.
computing context: database indices
Several economic indices showed that the local economy was growing steadily last year.
collocation: economic indices
- stock market indices
- economic indices
- database indices
- price indices
- indices point to
- indices show
Grammar Patterns
always plural in this form
Usage Note
Indices is the standard plural form of index in formal and academic English, especially in publishing, finance, computing, and mathematics. In everyday conversation, the alternative plural indexes is also widely accepted and is becoming more common in general use. Choose indices for formal writing, and indexes for casual or general contexts.