A unique combination of dictionary and usage guide, this new book offers a complete one-stop reference on the English language. Both parts of the Guide are completely up to date and have been compiled using the resources of the Oxford Dictionaries Department, including a massive computer database of English which allows accurate and up-to-date tracking of current trends in usage and spelling. This comprehensive dictionary includes:* Over 51,000 dictionary entries* 56,000 clear definitions* Pronunciations for thousands of awkward words* Quick reference usage notes at relevant entries* A detailed 150-page guide to the rules of grammar, spelling, pronunciation, punctuation, meaning, and idioms