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1. Over 80,000 definitions. More information than in any other dictionary of its kind.
2. Including new words and technical-scientific terms appearing in no other dictionary.
3. Current definitions. Up-to-the-minute definitions of contemporary vocabulary.
4. Finding the right word: The only dictionary with mini-essays (500) on the use of words that have similar meanings.
5. Easy pronunciation. Only 42 symbols represent the more than 250 common spellings of English sounds.
6. Word origins. Concise etymologies tell where words came from, and how they have changed.
7. An appendix that includes handy measurement conversion tables.
8. A comprehensive Guide to the Dictionary that teaches about words and language.