The definition of indices is the plural of index, which is a listing or an indicator.
An example of indices are telephone book listings.
alt. pl. of index
A plural of index
- plural form of index (when used in the sense of a key to locate an element in a list, vector or matrix in computing or mathematics)
- Both plurals are in common use. The OED claims that when referring to a directory listing, the plural indexes should be used.