WordWeb Pro supports optional additional dictionaries, each shown in a separate tab. When you look up a word, each tab indicates whether each dictionary has a match. All dictionaries also come with a word list for pattern-matching search.
New Oxford American Dictionary
The most accurate and richly descriptive picture of American English ever offered in any dictionary, with full audio pronunciations.
The foremost single-volume authority on the English language, with full audio pronunciations.
Huge range of words, with full audio pronunciations.
Chambers Dictionary of the English Language
The single-volume British and international English dictionary with the widest coverage of all the riches of the English language. Great for word lovers and crossword fans.
Comprehensive thesaurus, also available in a discounted bundle with the Chambers Dictionary.
Shorter Oxford English Dictionary
Based on the 20-volume Oxford English Dictionary, the Shorter Oxford English Dictionary contains an incredible one-third of the coverage of the Oxford English Dictionary. Includes full audio pronunciations.
Australian Oxford English Dictionary
The ultimate guide to contemporary Australian English, with audio pronunciations.
Canadian Oxford English Dictionary
The definitive guide to Canadian English.
The Chambers references are also available as iPhone/iPad dictionaries and for Android.