reversedictionary: Meaning and Definition of

reverse'•dic'tionary

1. an alphabetical list of words spelled in reversed order, of use esp. to linguists and cryptographers.
2. a thesauruslike dictionary alphabetizing meanings and concepts under which are listed the related words that are defined or explained.
3. a dictionary of alphabetized word elements, as prefixes, suffixes, and roots, with lists of the words derived from them.