This revised and updated edition on CD-ROM offers advanced students a new and exciting way to learn English. The CD-ROM includes 63,000 references, 90,000 examples, 65,000 definitions, 11,600 idioms and phrasal verbs, 1700 words illustrated, and 2000 new words and meanings. This edition is based on the combined resources of the prestigious British National Corpus and Oxford's own acclaimed language research programme, giving students a more representative picture of the written and spoken English they need to communicate in today's world.