The dictionary draws on the two-billion-word Oxford English Corpus and the unrivaled citation files of the world-renowned Oxford English Dictionary to provide the most accurate and richly descriptive picture of American English ever offered in any dictionary. The Third Edition offers a thoroughly updated text, with revisions throughout and approximately 2,000 new words, phrases, and meanings. Many new words relate to fast-moving areas such as computing, technology, current affairs, and ecology, while others have recently entered the popular lexicon. Usage notes have also been updated in light of the most recent Corpus evidence.