index

Meaning

1. An alphabetical listing of items and their location.
2. The index finger; the forefinger.
3. A movable finger on a gauge, scale, etc.
4. A symbol resembling a pointing hand, used to direct particular attention to a note or paragraph.
5. That which points out; that which shows, indicates, manifests, or discloses.
6. A sign; an indication; a token.
7. A type of noun where the meaning of the form changes with respect to the context; e.g., 'Today's newspaper' is an indexical form since its referent will differ depending on the context. See also icon and symbol.
8. A single number calculated from an array of prices or of quantities.
9. A number representing a property or ratio; a coefficient.
10. A raised suffix indicating a power.
11. An integer or other key indicating the location of data, e.g. within an array, vector, database table, associative array, or hash table.
12. A data structure that improves the performance of operations on a table.
13. The number of cosets that exist.
14. (obsolete) A prologue indicating what follows.

indicator

list

index number

Frequency

Pronounced as (IPA)

/ˈɪndɛks/

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

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