Longman Dictionary of American English

Clear and Comprehensive 95.000 words, phrases, and meanings, including all words on the Academic Wordlist 36.000 example sentences, including thousands of academic examples 3.500 new words for content areas such as History and Science Clear definitions written using just 2.000 common words The Key to Vocabulary 3.000 Thesaurus boxes explain thousands of synonyms and antonyms Over 3.000 word origins - 10.000 on the CD-ROM Learner's Handbook on Writing, Grammar, and Word Origins Workbook exercises for self-study and classroom use