Concordance \Con*cord"ance\, n. [F., fr. LL. concordantia.]

1. Agreement; accordance.

Contrasts, and yet concordances. --Carlyle.

2. (Gram.) Concord; agreement. [Obs.]

--Aschlam.

3. An alphabetical verbal index showing the places in the text of a book where each principal word may be found, with its immediate context in each place.

His knowledge of the Bible was such, that he might have been called a living concordance. --Macaulay.

4. A topical index or orderly analysis of the contents of a book.

Source: Webster's Revised Unabridged Dictionary (1913)