Longman Dictionary of Contemporary English 6 + Online

Longman dictionaries are compiled using the Longman Corpus Network - a huge database of 430 million words of spoken and written English - collected from both British and American English sources. They are easy to use and easy to understand: they are written using a limited vocabulary of just 2000 words - the Longman Defining Vocabulary - ensuring that they all have clear and understandable definitions.