An alphabetical listing of items and their location; for example, the index of a book lists words or expressions and the pages of the book upon which they are to be found.
A listing of keywords and associated data that point to the location of more comprehensive information, such as files and records on a disk or record keys in a database.
With a refractometer the refractive index of optical media is determined. If the refractive index of a chemical is known it can be used after a synthesis to determine the sample 's purity or to audit the synthesis ' success
To locate examples, see the Watch Tower Publications Index 1986-2000, under “Illustrations.” —Published in a number of languages by Jehovah’s Witnesses.