index >> ˈɪndɛks
Definition: [noun] (in a book or set of books) an alphabetical list of names, subjects, etc. with reference to the pages on which they are mentioned.
Example: clear cross references supplemented by a thorough index
Definition: [noun] a sign or measure of something.
Example: exam results may serve as an index of the teacher's effectiveness
Definition: [noun] an exponent or other superscript or subscript number appended to a quantity.
Definition: [noun] a pointer on an instrument, showing a quantity, a position on a scale, etc.
Definition: [verb] record (names, subjects, etc.) in an index.
Example: the list indexes theses under regional headings
Definition: [verb] link the value of (prices, wages, or other payments) automatically to the value of a price index.
Example: the Supreme Soviet passed legislation indexing wages to prices
Definition: [verb] (of a machine or part of one) move from one predetermined position to another in order to carry out a sequence of operations.
Example: the pins are retracted and indexed to occupy an adjacent slotted position