You can count on Collins Pro English Dictionary to provide all the content you need, along with extra features that help you get the most out of the dictionary.
• Over 75,000 entries with 140,000 definitions
• Thousands of biographic and geographic entries, as well as etymologies (root word histories)
• Slang, technical language, and regional differences in spelling and usage
• Hundreds of usage notes about troublesome constructions
• Smart search results in case you misspell or mistype
• Search-as-you-go displays words and narrows your selection as you type