An alphabetical listing of items and their location.
The index finger; the forefinger.
A movable finger on a gauge, scale, etc.
A symbol resembling a pointing hand, used to direct particular attention to a note or paragraph.
That which points out; that which shows, indicates, manifests, or discloses.
A sign; an indication; a token.
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.
A single number calculated from an array of prices or of quantities.
A number representing a property or ratio; a coefficient.
A raised suffix indicating a power.
(especially) An integer or other key indicating the location of data, e.g. within an array, vector, database table, associative array, or hash table.
A data structure that improves the performance of operations on a table.
The number of cosets that exist.
(obsolete) A prologue indicating what follows.

(transitive) To arrange an index for something, especially a long text.
To inventory; to take stock.
To normalise in order to account for inflation; to correct for inflation by linking to a price index in order to maintain real levels.
To measure by an associated value.
(transitive) To be indexical for (some situation or state of affairs); to indicate.
To access a value in a data container by an index.
(transitive) To use a mechanism to move an object to a precise location.

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