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

Features:

• Over 600 000 words, phrases, and definitions
• 80 000 quotations illustrating words in use throughout the centuries
• 85 000 audio pronunciations
• 100 000 etymologies
• Pattern search and spelling suggestions
• Full Text Search and Random Word

No internet connection is required, and you can use the OS X Services feature to look up selected words in most programs