Key features over 240,000 words, phrases, and definitions, covering technical and scientific vocabulary as well as english from around the world hundreds of new words and phrases, based on the latest research from the oxford english corpus hundreds of usage notes on tricky vocabulary and grammar usage cd-rom compatible with windows and mac operating systems about the book: concise oxford english dictionary 100 years after its first publication, the twelfth edition of this world-famous bestseller gives the most up-to-date picture of the english language today. The original 1911 edition, revolutionary at the time for its focus on current english and its use of illustrative examples, combined a succinct yet approachable style with coverage of everyday as well as specialist terms. This centenary edition continues this ground-breaking tradition, giving you rich authoritative coverage of english as it is used today. The cd-rom offers full-text search functionality, instant look-up from windo