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